Classification
610 - Medicine & health
872
900 - History & geography
835
700 - The arts; fine & decorative arts
694
333 - Economics of land & energy
625
000 - Computer science, information & general works
521
600 - Technology
510
320 - Political science
469
330 - Economics
421
363 - Other social problems & services
333
620 - Engineering & allied operations
324
140 - Specific philosophical schools
320
370 - Education
298
300 - Social sciences
291
100 - Philosophy & psychology
281
380 - Commerce, communications & transportation
277
580 - Plants (Botany)
254
540 - Chemistry & allied sciences
198
800 - Literature & rhetoric
171
576 - Genetics & evolution
161
200 - Religion
149
340 - Law
149
400 - Language
135
500 - Natural sciences & mathematics
133
581 - Specific topics in natural history
133
551 - Geology, hydrology & meteorology
122
301 - Sociology & anthropology
115
530 - Physics
114
612 - Human physiology
114
630 - Agriculture & related technologies
109
410 - Linguistics
100
170 - Ethics
75
720 - Architecture
72
304 - Factors affecting social behavior
70
414 - Phonology & phonetics
56
615 - Pharmacology & therapeutics
56
780 - Music
50
297 - Islam, Babism & Bahai Faith
46
658 - General management
40
361 - Social problems & social welfare in general
33
350 - Public administration & military science
24
791 - Public performances
18
120 - Epistemology, causation & humankind
15
364 - Criminology
13
296 - Judaism
12
770 - Photography, photographs & computer art
11
520 - Astronomy & allied sciences
10
590 - Animals (Zoology)
9
360 - Social problems & services; associations
8
657 - Accounting
7
336 - Public finance
6
more ...