Classification
320 - Political science
330 - Economics
275
900 - History & geography
36
340 - Law
27
300 - Social sciences
24
630 - Agriculture & related technologies
22
657 - Accounting
20
700 - The arts; fine & decorative arts
18
333 - Economics of land & energy
13
000 - Computer science, information & general works
11
363 - Other social problems & services
10
500 - Natural sciences & mathematics
9
600 - Technology
9
610 - Medicine & health
9
380 - Commerce, communications & transportation
8
140 - Specific philosophical schools
6
370 - Education
5
100 - Philosophy & psychology
3
200 - Religion
3
576 - Genetics & evolution
3
620 - Engineering & allied operations
3
650 - Management & auxiliary services
3
350 - Public administration & military science
2
551 - Geology, hydrology & meteorology
2
658 - General management
2
800 - Literature & rhetoric
2
170 - Ethics
1
297 - Islam, Babism & Bahai Faith
1
301 - Sociology & anthropology
1
326 - Slavery & emancipation
1
336 - Public finance
1
361 - Social problems & social welfare in general
1
400 - Language
1
414 - Phonology & phonetics
1
530 - Physics
1
581 - Specific topics in natural history
1