Classification
320 - Political science
330 - Economics
310
900 - History & geography
125
333 - Economics of land & energy
119
363 - Other social problems & services
67
700 - The arts; fine & decorative arts
66
000 - Computer science, information & general works
49
600 - Technology
43
300 - Social sciences
37
551 - Geology, hydrology & meteorology
36
380 - Commerce, communications & transportation
34
340 - Law
30
610 - Medicine & health
26
140 - Specific philosophical schools
24
304 - Factors affecting social behavior
16
200 - Religion
15
581 - Specific topics in natural history
15
620 - Engineering & allied operations
14
630 - Agriculture & related technologies
14
370 - Education
13
576 - Genetics & evolution
13
400 - Language
11
800 - Literature & rhetoric
11
297 - Islam, Babism & Bahai Faith
10
301 - Sociology & anthropology
10
361 - Social problems & social welfare in general
10
410 - Linguistics
10
100 - Philosophy & psychology
8
658 - General management
7
720 - Architecture
5
170 - Ethics
4
336 - Public finance
4
350 - Public administration & military science
4
360 - Social problems & services; associations
4
414 - Phonology & phonetics
4
500 - Natural sciences & mathematics
4
580 - Plants (Botany)
4
550 - Earth sciences
3
780 - Music
3
323 - Civil & political rights
2
540 - Chemistry & allied sciences
2
657 - Accounting
2
160 - Logic
1
364 - Criminology
1
520 - Astronomy & allied sciences
1
791 - Public performances
1
951 - China & adjacent areas
1