Classification
320 - Political science
658 - General management
330 - Economics
35
333 - Economics of land & energy
21
700 - The arts; fine & decorative arts
21
000 - Computer science, information & general works
19
363 - Other social problems & services
17
600 - Technology
17
380 - Commerce, communications & transportation
14
610 - Medicine & health
12
370 - Education
10
551 - Geology, hydrology & meteorology
9
140 - Specific philosophical schools
8
620 - Engineering & allied operations
8
900 - History & geography
8
340 - Law
7
576 - Genetics & evolution
7
170 - Ethics
4
300 - Social sciences
4
580 - Plants (Botany)
4
100 - Philosophy & psychology
3
581 - Specific topics in natural history
3
800 - Literature & rhetoric
3
297 - Islam, Babism & Bahai Faith
2
304 - Factors affecting social behavior
2
350 - Public administration & military science
2
361 - Social problems & social welfare in general
2
400 - Language
2
630 - Agriculture & related technologies
2
650 - Management & auxiliary services
2
720 - Architecture
2
791 - Public performances
2
336 - Public finance
1
398 - Folklore
1
550 - Earth sciences
1
657 - Accounting
1
770 - Photography, photographs & computer art
1
780 - Music
1