Classification
616 - Diseases
4,175
610 - Medicine & health
2,806
571 - Physiology & related subjects
1,430
570 - Life sciences; biology
597
617 - Surgery & related medical specialties
558
615 - Pharmacology & therapeutics
512
006 - Special computer methods
507
700 - The arts; fine & decorative arts
459
572 - Biochemistry
413
000 - Computer science, information & general works
308
614 - Incidence & prevention of disease
304
620 - Engineering & allied operations
274
612 - Human physiology
245
540 - Chemistry & allied sciences
241
600 - Technology
228
333 - Economics of land & energy
223
363 - Other social problems & services
221
613 - Personal health & safety
215
140 - Specific philosophical schools
213
330 - Economics
177
580 - Plants (Botany)
173
304 - Factors affecting social behavior
150
618 - Gynecology, obstetrics, pediatrics & geriatrics
133
660 - Chemical engineering
129
621 - Applied physics
117
004 - Data processing & computer science
103
005 - Computer programming, programs & data
101
380 - Commerce, communications & transportation
99
500 - Natural sciences & mathematics
94
576 - Genetics & evolution
91
519 - Probabilities & applied mathematics
76
579 - Microorganisms, fungi & algae
71
900 - History & geography
69
300 - Social sciences
66
611 - Human anatomy, cytology & histology
65
530 - Physics
55
658 - General management
54
370 - Education
49
664 - Food technology
43
547 - Organic chemistry
42
100 - Philosophy & psychology
41
641 - Food & drink
38
001 - Knowledge
35
630 - Agriculture & related technologies
34
003 - Systems
33
599 - Mammals
33
577 - Ecology
28
306 - Culture & institutions
27
541 - Physical chemistry
26
581 - Specific topics in natural history
26
more ...