SUBJECT
Science
3,326
Mathematics
3,106
Chemistry
1,940
Physics
1,833
Study and teaching
1,815
Biology
1,633
Calculus
1,156
Algebra
1,140
Mathematical statistics
1,074
Congresses
980
Research
874
Biochemistry
847
Ecology
820
Chemistry, Organic
819
History
782
Probabilities
747
Microbiology
740
Data processing
734
Study and teaching (Elementary)
730
Physiology
727
Statistics
719
Botany
711
Geology
703
Human anatomy
664
Study and teaching (Secondary)
611
Electronic data processing
589
Genetics
575
Human physiology
564
Laboratory manuals
562
Philosophy
550
Juvenile literature
548
Programming
479
Nutrition
468
Computers
444
Anatomy
438
Differential equations
438
Methodology
438
Climatic changes
429
Technology
428
Geometry, Analytic
426
Mathematical models
424
Quantum theory
420
Experiments
408
Mathematical analysis
400
Molecular biology
395
Problems, exercises, etc
384
Social aspects
383
Zoology
370
Database management
362
Chemistry, Physical and theoretical
359
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