Classification
320 - Political science
330 - Economics
380 - Commerce, communications & transportation
333 - Economics of land & energy
98
363 - Other social problems & services
65
000 - Computer science, information & general works
45
600 - Technology
41
700 - The arts; fine & decorative arts
39
900 - History & geography
30
300 - Social sciences
23
340 - Law
21
551 - Geology, hydrology & meteorology
19
370 - Education
18
140 - Specific philosophical schools
17
658 - General management
14
576 - Genetics & evolution
13
610 - Medicine & health
13
100 - Philosophy & psychology
12
620 - Engineering & allied operations
12
630 - Agriculture & related technologies
11
800 - Literature & rhetoric
8
170 - Ethics
7
581 - Specific topics in natural history
7
657 - Accounting
7
720 - Architecture
7
304 - Factors affecting social behavior
6
400 - Language
6
200 - Religion
5
336 - Public finance
5
361 - Social problems & social welfare in general
5
410 - Linguistics
5
350 - Public administration & military science
4
414 - Phonology & phonetics
4
297 - Islam, Babism & Bahai Faith
3
301 - Sociology & anthropology
3
530 - Physics
3
580 - Plants (Botany)
3
780 - Music
3
791 - Public performances
3
500 - Natural sciences & mathematics
2
364 - Criminology
1
550 - Earth sciences
1
650 - Management & auxiliary services
1