SUBJECT
Science
3.325
Mathematics
3.104
Chemistry
1.939
Physics
1.832
Study and teaching
1.814
Biology
1.633
Calculus
1.156
Algebra
1.140
Mathematical statistics
1.074
Congresses
980
Research
874
Biochemistry
847
Chemistry, Organic
818
Ecology
818
History
780
Probabilities
747
Microbiology
740
Data processing
732
Study and teaching (Elementary)
730
Physiology
727
Statistics
719
Botany
711
Geology
702
Human anatomy
664
Study and teaching (Secondary)
611
Electronic data processing
588
Genetics
575
Human physiology
564
Laboratory manuals
562
Philosophy
549
Juvenile literature
548
Programming
479
Nutrition
468
Computers
443
Anatomy
438
Differential equations
438
Methodology
438
Technology
428
Geometry, Analytic
426
Mathematical models
424
Climatic changes
422
Quantum theory
420
Experiments
408
Mathematical analysis
399
Molecular biology
394
Problems, exercises, etc
384
Social aspects
383
Zoology
369
Database management
361
Chemistry, Physical and theoretical
359
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