Classification
350 - Public administration & military science
320 - Political science
79
330 - Economics
33
300 - Social sciences
19
333 - Economics of land & energy
19
900 - History & geography
14
301 - Sociology & anthropology
11
340 - Law
11
600 - Technology
11
140 - Specific philosophical schools
9
304 - Factors affecting social behavior
9
610 - Medicine & health
9
700 - The arts; fine & decorative arts
9
363 - Other social problems & services
8
370 - Education
8
000 - Computer science, information & general works
6
380 - Commerce, communications & transportation
6
551 - Geology, hydrology & meteorology
6
100 - Philosophy & psychology
5
361 - Social problems & social welfare in general
5
120 - Epistemology, causation & humankind
3
170 - Ethics
3
581 - Specific topics in natural history
3
620 - Engineering & allied operations
3
576 - Genetics & evolution
2
630 - Agriculture & related technologies
2
657 - Accounting
2
658 - General management
2
297 - Islam, Babism & Bahai Faith
1
360 - Social problems & services; associations
1
400 - Language
1
530 - Physics
1
612 - Human physiology
1
650 - Management & auxiliary services
1
720 - Architecture
1