Classification
610 - Medicine & health
304 - Factors affecting social behavior
2,632
330 - Economics
2,089
700 - The arts; fine & decorative arts
1,520
333 - Economics of land & energy
1,110
600 - Technology
919
320 - Political science
879
000 - Computer science, information & general works
809
363 - Other social problems & services
793
140 - Specific philosophical schools
750
370 - Education
680
900 - History & geography
642
580 - Plants (Botany)
609
380 - Commerce, communications & transportation
564
620 - Engineering & allied operations
485
100 - Philosophy & psychology
447
340 - Law
426
300 - Social sciences
333
500 - Natural sciences & mathematics
297
612 - Human physiology
286
540 - Chemistry & allied sciences
245
306 - Culture & institutions
221
630 - Agriculture & related technologies
208
576 - Genetics & evolution
202
170 - Ethics
191
615 - Pharmacology & therapeutics
185
361 - Social problems & social welfare in general
140
551 - Geology, hydrology & meteorology
130
658 - General management
121
301 - Sociology & anthropology
116
581 - Specific topics in natural history
114
800 - Literature & rhetoric
112
200 - Religion
93
414 - Phonology & phonetics
69
400 - Language
66
362 - Social welfare problems & services
61
720 - Architecture
55
616 - Diseases
53
530 - Physics
42
336 - Public finance
33
618 - Gynecology, obstetrics, pediatrics & geriatrics
31
410 - Linguistics
30
780 - Music
26
360 - Social problems & services; associations
21
374 - Adult education
19
338 - Production
15
590 - Animals (Zoology)
15
384 - Communications; telecommunication
14
519 - Probabilities & applied mathematics
14
791 - Public performances
14
more ...