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1Science22,5233.9M22
2Biology19,5303.4M22
3Physics15,6993.2M72
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5Natural history5,4712.2M31
6Cell Biology7,7371.8M22
7Cytology7,5281.7M22
8Molecular Biology11,4781.4M22
9Virology4,6461.3M22
10Neurology10,8171.1M22
11Biochemistry12,375954.9K73
12Chemistry7,145698.1K136
13Immunology7,540689.3K11
14Human genetics2,364641.7K11
15Genetics4,499632.5K22
16Research9,398576.0K11
17Psychiatry6,669546.7K11
18Public Health7,149523.3K21
19Surgery2,731496.4K11
20Microbiology5,151492.6K82
21Biotechnology2,230437.7K142
22Immunity2,192432.4K11
23Cancer4,789394.3K13
24Economics2,556388.6K41
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26Neurophysiology2,782351.2K22
27Cardiovascular system3,108308.8K11
28Developmental Biology2,648308.7K23
29Epidemiology4,162304.6K32
30Psychology3,900304.6K22
31Biochemical Engineering791300.3K181
32Hematology7,011282.5K51
33Astrophysics4,042272.7K2325
34Pediatrics4,577271.9K11
35Endocrinology3,986270.0K22
36Neurons1,084267.8K33
37Physiology3,529247.7K42
38Medical genetics2,691237.2K31
39Nanotechnology2,132236.7K239
40Hypertension2,436236.0K11
41Mental Disorders2,735230.7K21
42Metabolic diseases2,247220.2K31
43Biophysics5,295218.6K52
44Spectrum analysis3,200218.1K1412
45United States4,118216.2K63
46Nuclear Physics3,049203.9K4013
47Environmental Health2,923198.4K64
48genome805198.3K43
49Statistics1,901198.0K32
50Immune system715196.7K11
51Psychophysiology2,754191.1K22
52Oncology1,515185.2K31
53Cytogenetics1,215181.4K22
54Environment1,981180.1K43
55Allergy1,411179.0K11
56Cell differentiation1,439178.5K21
57Metabolism2,494171.8K32
58Embryology1,329171.2K23
59Nervous system1,481169.4K22
60Solid State Physics1,984167.5K349
61Ecology2,090166.7K3026
62Anatomy1,551165.4K22
63Condensed Matter1,956163.9K3411
64Diabetes1,880161.9K21
65Growth1,064160.9K33
66Diabetes mellitus1,755157.8K21
67Computational Biology1,126155.5K44
68Genetic regulation871154.6K12
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70Materials1,054151.4K14634
71Developmental Genetics789151.3K22
72Pharmacology2,135148.8K135
73Immunotherapy770144.9K21
74Gene expression regulation759140.9K22
75Astronomy2,879140.0K3956
76management656133.5K163
77viral genetics574131.9K22
78Pathology1,481128.9K21
79Sociology1,389124.9K32
80Behavior2,013123.0K22
81nucleic acids742122.8K48
82viruses1,584122.7K31
83Psychopharmacology1,749121.9K21
84Bioinformatics741121.5K45
85Neurobiology1,313114.5K22
86Bacteriology945114.4K45
87Diet1,548113.6K11
88Brain1,732111.9K33
89Pharmaceutical Chemistry1,388110.7K91
90miniaturization853107.8K45
91Biomedical Engineering1,471105.4K95
92Pediatric Neurology806104.6K12
93Materials Science1,047104.4K8018
94gene mapping852103.1K32
95Biocompatible Materials1,094101.5K2911
96Mental illness1,53594.3K22
97Perception1,93592.7K22
98Cell metabolism43591.3K11
99Geophysics1,50391.1K4529
100Homeostasis42091.1K11
101Memory1,82390.7K22
102commerce32289.2K41
103Health Policy2,09688.4K11
104Social Psychology91886.5K35
105Quantum Gravity1,12585.9K2716
106Statistical physics1,47985.7K195
107Medical innovations77485.2K11
108Host-parasite interactions69384.3K21
109Transplantation1,47084.2K11
110Business30984.1K122
111Cognitive neuroscience65481.9K22
112Environmental Toxicology74981.3K83
113drug development73981.3K11
114Medical Oncology2,66880.8K34
115Clinical Psychology71880.2K42
116Neurochemistry1,19979.5K53
117Political Science1,01678.7K32
118Cognition94877.2K22
119Geriatrics1,89876.7K55
120Attention1,77776.7K21
121cell physiology99776.1K22
122human behavior88174.8K23
123Visual Perception1,69173.7K21
124Sleep1,63573.3K11
125Oncogenes64671.2K43
126Pollution84769.5K7434
127Botany1,47769.3K2033
128Optics1,44968.6K318
129Ophthalmology1,67068.5K22
130Medical Anthropology84268.1K31
131Critical Care1,00867.6K33
132Microelectronics46567.3K107
133Toxicology1,14067.0K308
134Sleep Disorders1,57666.5K11
135Critical Care Medicine91766.0K43
136Research Design42164.2K31
137Molecular structure53064.0K83
138Alzheimer's disease1,54963.3K34
139Child psychology96963.1K24
140Radiobiology2,16162.5K35
141Genomics1,16862.0K64
142Urology1,33161.2K67
143biological evolution84360.2K511
144Health Services Administration1,19059.8K11
145DNA polymerases22859.4K22
146Obesity1,16759.0K22
147Dermatology1,82757.4K23
148Aging1,34756.8K64
149Dementia1,43456.4K35
150Biometrics1,03456.4K22
151Medical Microbiology72856.1K87
152Child Development97754.5K48
153Obstetrics1,53754.3K33
154economic policy52854.2K111
155Medical Physics1,43153.5K53
156Mathematics2,01153.0K3413
157Cognitive Science41551.3K22
158Environmental Engineering76750.9K1517
159Mathematical Physics82050.2K165
160Neuropsychology89250.1K32
161pain74249.4K22
162Schizophrenia1,06249.2K12
163Animal Behavior50549.0K156
164Atmospheric Physics59949.0K3217
165Therapeutics79948.7K33
166Clinical Chemistry99148.3K63
167Virulence53247.8K42
168Molecular Microbiology34847.5K32
169Bacterial infections30546.6K21
170arthritis94546.4K23
171Genetic engineering52646.3K72
172Nanostructures21245.5K366
173mycoses27345.4K21
174Clinical Trials28445.1K11
175Respiration72145.0K22
176Econometrics27944.9K112
177Geology58044.0K8834
178nanoscience44144.0K5429
179Economic History85143.3K144
180Analytical Chemistry39243.2K17221
181Liver diseases58743.1K711
182Atmospheric Chemistry46642.9K2113
183Chromosome mapping61542.9K32
184preventive medicine87142.5K36
185Child1,42442.1K24
186Combinatorial chemistry40641.1K22
187Ethology35440.5K164
188Cerebral cortex44240.1K31
189Histology43339.7K82
190Social Sciences1,19139.0K53
191Health promotion88738.8K56
192organization22538.7K34
193psychotherapy57138.3K24
194Rheumatology69438.3K22
195Evolution52038.0K107
196Developing countries64937.4K63
197Orthopedics81336.8K45
198Chronic diseases28936.3K78
199proteins52636.0K74
200behavioral medicine55435.5K22
201personality39735.4K78
202Stem cells74035.1K21
203Metals26034.8K10717
204Developmental Psychology53734.3K33
205Meteorology44434.1K8355
206Polymers42933.9K24577
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208drug therapy80333.8K810
209Economic Development38933.8K95
210fertility1,02133.8K12
211Environmental monitoring66533.7K1615
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214Infertility1,01433.4K12
215Planets51733.2K4730
216Environmental Policy56332.7K1011
217Adolescent1,17732.5K23
218diseases7932.5K42
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220Disease7632.2K12
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225Geochemistry35031.1K6527
226Light31531.0K24
227gene therapy46030.9K21
228Clinical Immunology96030.7K11
229Anthropology1,16429.4K22
230marketing21029.3K2618
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232Plant cells15529.3K7337
233Photonics25829.2K366
234Leukemia52029.0K99
235Colloids43428.9K11036
236Biomechanics38628.6K53
237Nonlinear Dynamics51228.3K2512
238Decision making34928.1K34
239Immunopathology72828.1K22
240drug addiction40627.7K93
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245Meteorites25627.1K3720
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248vascular diseases38526.7K11
249Data Mining18626.6K71
250Organic Chemistry47226.2K5016
251United Kingdom42826.0K178
252Health insurance48925.8K13
253income distribution4325.5K21
254Computer Vision19925.5K1310
255Optical materials27225.1K8846
256data collection13524.9K31
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258sanitation31824.7K2637
259Proteome31724.5K44
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262Emergency Medicine95424.1K33
263environmental protection44924.1K2113
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265Histochemistry17923.6K101
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272Anxiety31022.9K11
273Membranes43522.9K813
274finance26722.9K3012
275Gerontology81022.7K86
276Mathematical Economics7922.7K61
277protein26222.4K128
278Diagnostic microbiology27222.2K1115
279nuclear magnetic resonance43722.1K55
280Signal Transduction27022.1K114
281Vaccines54321.5K117
282Radiology1,03221.3K11
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284Hospitals70121.1K12
285Climate change11420.7K3819
286brain mapping25820.7K12
287Eutrophication10720.7K4119
288Environmental Law37320.7K32
289Recombinant DNA23120.4K133
290Medical Laboratory Science41820.3K55
291Physical Therapy48620.2K56
292Surface Chemistry27720.2K19575
293Psycholinguistics28720.0K36
294Psychosomatic Medicine41820.0K34
294Plants20520.0K7851
296health behavior55920.0K66
297Lipids25119.8K74
298Magnetic Resonance Spectroscopy35719.8K84
299Women's health53719.8K52
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302Genetic recombination20419.5K153
303polymerization16919.4K499113
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306enzymes40818.5K35
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308Public Policy37918.4K66
309human development28718.1K22
310Risk24118.0K13
311Technology36517.9K11352
312Plant physiology13717.9K14844
313Earth Sciences19517.8K20082
314Artificial Intelligence48117.8K5548
315Photochemistry28517.6K123
316cloning20717.6K11
317Bones28617.5K43
318Nanostructured Materials30817.3K12986
319Cardiovascular diseases65417.1K33
320transport vesicles4616.8K417
321plant molecular biology9116.8K17661
322environmental exposure35816.8K98
323Eating Disorders35916.5K53
324Sports Medicine58516.5K1936
325Vision28316.5K43
326Depression20516.3K11
327Image Processing22616.2K3620
328health services41516.2K42
329Metallurgy21016.1K16571
330Systems Biology42016.1K42
331Health Services Research51916.0K921
332Feeding and Eating Disorders33215.8K53
333Hemodynamics24815.6K32
334Pharmacogenetics32915.6K44
335Analytical Biochemistry25615.5K611
336Neurotransmitters33415.4K11
337Heart Failure36815.3K23
338Audiology26114.9K82
339Morphology24214.9K32
340Population Genetics21414.8K1416
341Archaeology26114.7K255
342Proteomics19614.7K75
343environmental pollution36014.4K142166
344Zoology37414.4K4716
345Social problems14114.1K43
346Parenteral nutrition39014.0K214
347Otolaryngology41713.9K11
348Kidney diseases31213.9K53
349Bipolar Disorder23713.8K11
350Medical Technology40413.8K32
351free radicals21113.8K2619
352Post-traumatic stress disorder23913.7K67
353Microeconomics15013.6K22
354Entomology73413.5K2131
355infection25513.3K1715
356disease outbreaks27413.3K25
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367Oxidation-reduction14112.8K42
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652healthcare disparities1624.0K43
653conflict management2014.0K14
654families1044.0K3324
654Youth904.0K1925
656Sociobiology704.0K35
657Suicide1414.0K12
658Andrology1104.0K106
659violence1484.0K1443
660Bioelectronics514.0K9570
661Cross-Cultural Studies1784.0K24
661scientific societies1424.0K1016
663crime743.9K4521
664pain management973.9K1414
665Clinical Pharmacology933.9K10068
666Ceramics433.9K29496
667Ventilation503.9K3310
668Glass413.9K23389
668pottery413.9K22489
670Geriatric Oncology1033.9K1012
671drug resistance303.9K645
672industrial hygiene2463.9K915
673Community Psychology693.8K2639
674air quality management463.8K198
675energy development373.8K5773
676European integration153.8K642
676European Economic Community153.8K632
678indoor air pollution463.8K208
678Sick building syndrome463.8K208
680Solid State Chemistry903.7K313145
681Birth control1113.7K1114
682Asia2573.7K5068
683mathematical analysis1443.7K17674
684Fluid Dynamics343.7K26144
685Humanities1323.7K265
686DNA methylation833.7K11
687Amyotrophic Lateral Sclerosis773.6K42
688Quantum theory773.6K4515
689animals743.6K9425
690Space telescopes333.6K149
691nuclear magnetic resonance spectroscopy1053.6K1225
692Pregnancy1233.6K1315
693Ethics2133.6K37
694Sustainable Development893.5K84125
695Signal Processing683.5K22888
696Hydrology663.5K419292
697Sexual health1133.5K2521
698Pediatric Dermatology1643.5K22
699Telemedicine853.5K32
700Public Health Administration1253.5K2211
701Fracture mechanics533.5K23180
702Endocrine system3673.5K21
703Bioenergetics813.4K5758
704Industrial Policy503.4K72
705cell movement573.4K42
706locomotion673.4K3724
706posture673.4K3724
706gait673.4K3724
706walking673.4K3724
710Elderly4513.4K1416
711Pharmaceutical Technology713.4K12884
712Investment analysis283.4K6711
713Respiratory system1073.4K612
714Evidence-Based Medicine1883.3K2026
715Political Sociology813.3K513
716Lipid metabolism403.3K107
716Lipid403.3K107
718immigration213.3K154
718migration policy223.3K184
718Asylum seeker213.3K144
721Environmental pollutants573.3K303166
722Music1023.3K217
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724Vocational guidance923.3K7784
725Human-Computer Interaction993.2K3541
726children863.2K522
727embryo transfer1473.2K22
728Physical fitness643.2K7160
729civil service343.2K3110
730Machine Learning233.2K4433
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732Intelligence603.2K711
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734Knowledge733.1K132
735radiative transfer353.1K10638
736Sexuality1053.1K22
737tomography1113.1K53
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739Europa413.0K356
740pollutants473.0K290151
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741Long-term care facilities1133.0K962
743educational statistics233.0K105
744Emergency Medical Services2013.0K39
745Globalization733.0K94
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747Mass Spectrometry673.0K12485
748innovation483.0K2269
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750feeding behavior883.0K3647
751mental processes1393.0K22
752Forest Ecology513.0K155107
753Cardiac electrophysiology753.0K65
753arrhythmia753.0K65
755breastfeeding1212.9K44
756Statistical Mechanics852.9K6944
757Economic Geography262.9K396
758Aerosols882.9K3233
759Cytoskeleton662.9K54
760Nursing1672.9K6777
761preimplantation genetic diagnosis1342.9K22
762biomedicine802.9K3120
763consumers222.9K361
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765eugenics1192.8K914
766Neural circuitry822.8K125150
767Database Management512.8K10573
768Investments672.8K134
769Japan892.8K235109
770Genetic disorders872.7K1525
771Venture Capital432.7K457
772Mechanical Engineering472.7K547136
773Microfabrication372.7K232
774Landscape Ecology252.7K7125
775Developed countries402.7K44
776Technological Innovations812.7K1213
777Behavioral research522.7K62
778Social policy1122.7K1622
779Neurovirology672.7K54
780Energy metabolism722.7K5472
781Seismology702.7K5744
782Nonprofit organizations282.7K244
783drug evaluation792.7K3926
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785mammals1242.6K3245
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788Synthetic biology662.6K1111
789cell membrane682.6K5664
790ethnic groups772.6K23
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792Forensic Psychiatry972.5K1213
793Macroeconomics332.5K149
794Pharmacognosy732.5K180217
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796sustainability452.5K3172
797Hearing942.5K4751
798Safety management922.5K32
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801foreign exchange432.5K910
802Culture1222.5K2518
803Algebra1082.4K9827
804Travel1082.4K2529
805Family Therapy1102.4K2228
806probabilities1062.4K9650
807Input-output analysis342.4K94
808Marine Meteorology572.4K6967
809Palliative Care1152.4K2446
810Simulation Methods182.4K2086
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812Neurogenetics652.4K21
813Natural resources322.3K11763
814Radioisotopes1162.3K4332
815Reading472.3K6639
816Nutritional support232.3K82
817Environmental Management652.3K379502
818micromechanics372.3K6023
819Teratology652.3K1628
820Fungi382.3K202157
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825Informatics422.2K6274
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827Paleoclimatology502.2K170152
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829Consumer Protection162.2K252
830Bacterial diseases352.2K42
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832Appetite662.2K4447
833Forest Management432.2K171139
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837Quality Control322.2K315107
838income282.1K102
838Wealth282.1K102
840Paleoecology542.1K131128
841Organ transplantation1102.1K811
842Geometry1212.1K3124
843Cognitive Behavioral Therapy1102.1K17
844social science112.1K347
845Brain damage842.1K711
846Plant diseases422.1K509299
847negotiation1602.1K11
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851Gene expression392.1K2222
852emergency management1052.1K429
853actuators562.1K329336
853transducers562.1K329336
855hygiene612.1K1819
856Learning disabilities552.1K9355
857women1012.1K105
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859Androgens342.1K1510
860DNA repair472.1K1320
861technical education222.0K857
862Information Systems912.0K4092
863Performance232.0K3713
864Portfolio Management372.0K187
865Brachytherapy912.0K105
866Hemostasis1062.0K1633
867software602.0K2033
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870Cognitive Psychology372.0K142
871Ultrasonics352.0K14079
872embryonic development342.0K3922
873Neonatology562.0K2723
874Demographic research432.0K1114
875Photography4832.0K2935
876primary prevention771.9K810
877Composite Materials301.9K935662
878peptides551.9K3813
878rare diseases661.9K1839
880Melanoma441.9K57
881Immunopharmacology531.9K9066
882strategy1421.9K12
883Hematopoietic stem cell transplantation541.9K810
884Algae471.9K9292
885Precision medicine931.9K11
886voice591.9K1512
887occupational health and safety1041.9K1013
888Freeze-Drying1001.8K811
888Hypothermia1001.8K811
888Freeze Drying1001.8K811
891Regional Economics131.8K1309
892Frontotemporal lobar degeneration561.8K55
893Paleogeography401.8K152137
894Capitalism271.8K42
895Regionalism101.8K702
896Energy Storage301.8K272181
897Environmental Economics231.8K3225
898ethnicity931.8K116
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900Business Ethics271.8K168163
901Religion1651.8K279
902Topology711.8K64
903anesthesia1391.8K33
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905Forecasting301.8K4636
906Crystal growth251.8K24375
907exobiology451.8K1841
908Particle Physics421.8K8633
909Biological Systems381.8K3723
910Electrical Engineering4631.8K85263
911World Bank131.8K52
912Social Change541.7K26111
913Cellular senescence291.7K8154
914Language Acquisition411.7K2724
915role331.7K3528
916X-rays691.7K1110
917Synaptic Transmission321.7K5335
918Telecommunication611.7K296198
919Multiple sclerosis1311.7K58
920Agricultural Chemistry381.7K622467
920Tissue Engineering391.7K1421
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922Lymphoma2181.7K88
924Quality Assurance451.7K133
925agricultural policy281.7K2721
926Hypertension in pregnancy641.7K97
927Flow cytometry651.7K922
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928catalytic activity161.6K21671
930food technology511.6K491484
930Seaweed421.6K5477
932geological modeling211.6K10460
933Semiconductors691.6K235179
934Birds781.6K143142
935Parasites541.6K191201
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937Diagnosis901.6K1510
938Food Microbiology351.6K245260
939Pharmacokinetics521.6K6684
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945Water pollution401.6K710752
947Neuroplasticity461.6K73
948Oral History121.6K11
949Osteoporosis401.6K1016
950biochemical markers581.6K3221
951Industrial Ecology151.6K3616
952Quantum Computing321.6K85
953Medicinal plants551.6K151247
954Quantum electronics121.5K43422
955Combinatorial analysis871.5K7557
956Geochemical Modeling201.5K8862
957health workforce381.5K58
957epidemiologic methods351.5K53
959neuronal plasticity431.5K53
960Ethnic relations441.5K299
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963Cell adhesion281.5K22
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965liver701.5K33
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967Regional Development221.5K279
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969Development planning211.5K108
969Atomic spectroscopy351.5K222109
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975Radiation Oncology331.5K3015
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978sex crimes561.5K4262
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990circadian rhythm471.4K1026
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994War591.4K46
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996Geodynamics151.4K394200
997Health care reform1141.4K11
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999biological rhythms451.4K927
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