Classification
571 - Physiology & related subjects
2,092
610 - Medicine & health
1,221
616 - Diseases
715
700 - The arts; fine & decorative arts
664
570 - Life sciences; biology
526
000 - Computer science, information & general works
456
600 - Technology
443
572 - Biochemistry
430
333 - Economics of land & energy
424
620 - Engineering & allied operations
421
580 - Plants (Botany)
406
612 - Human physiology
346
140 - Specific philosophical schools
266
540 - Chemistry & allied sciences
218
363 - Other social problems & services
201
380 - Commerce, communications & transportation
177
900 - History & geography
177
576 - Genetics & evolution
169
615 - Pharmacology & therapeutics
166
514 - Topology
154
500 - Natural sciences & mathematics
126
579 - Microorganisms, fungi & algae
109
660 - Chemical engineering
91
330 - Economics
88
530 - Physics
86
621 - Applied physics
84
516 - Geometry
72
304 - Factors affecting social behavior
69
630 - Agriculture & related technologies
68
414 - Phonology & phonetics
63
590 - Animals (Zoology)
61
581 - Specific topics in natural history
52
384 - Communications; telecommunication
40
515 - Analysis
40
611 - Human anatomy, cytology & histology
39
004 - Data processing & computer science
37
547 - Organic chemistry
31
618 - Gynecology, obstetrics, pediatrics & geriatrics
30
551 - Geology, hydrology & meteorology
28
800 - Literature & rhetoric
28
512 - Algebra
27
658 - General management
27
720 - Architecture
26
617 - Surgery & related medical specialties
25
340 - Law
23
614 - Incidence & prevention of disease
23
370 - Education
19
005 - Computer programming, programs & data
18
541 - Physical chemistry
17
543 - Analytical chemistry
16
more ...