Classification
900 - History & geography
134
700 - The arts; fine & decorative arts
124
610 - Medicine & health
110
320 - Political science
83
330 - Economics
76
300 - Social sciences
70
333 - Economics of land & energy
67
140 - Specific philosophical schools
66
370 - Education
58
800 - Literature & rhetoric
50
000 - Computer science, information & general works
39
600 - Technology
37
200 - Religion
36
100 - Philosophy & psychology
34
304 - Factors affecting social behavior
33
363 - Other social problems & services
33
380 - Commerce, communications & transportation
31
301 - Sociology & anthropology
30
340 - Law
30
400 - Language
24
620 - Engineering & allied operations
18
170 - Ethics
16
361 - Social problems & social welfare in general
15
780 - Music
15
297 - Islam, Babism & Bahai Faith
14
580 - Plants (Botany)
12
630 - Agriculture & related technologies
11
551 - Geology, hydrology & meteorology
10
658 - General management
10
770 - Photography, photographs & computer art
10
410 - Linguistics
9
581 - Specific topics in natural history
9
720 - Architecture
9
576 - Genetics & evolution
8
500 - Natural sciences & mathematics
7
530 - Physics
4
612 - Human physiology
4
791 - Public performances
4
364 - Criminology
3
120 - Epistemology, causation & humankind
2
296 - Judaism
2
350 - Public administration & military science
2
398 - Folklore
2
540 - Chemistry & allied sciences
2
657 - Accounting
2
920 - Biography, genealogy & insignia
2
160 - Logic
1
336 - Public finance
1
360 - Social problems & services; associations
1
414 - Phonology & phonetics
1
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