Classification
000 - Computer science, information & general works
320 - Political science
330 - Economics
380 - Commerce, communications & transportation
333 - Economics of land & energy
27
700 - The arts; fine & decorative arts
23
363 - Other social problems & services
16
600 - Technology
14
551 - Geology, hydrology & meteorology
11
370 - Education
10
140 - Specific philosophical schools
9
900 - History & geography
9
576 - Genetics & evolution
8
300 - Social sciences
7
340 - Law
6
610 - Medicine & health
6
620 - Engineering & allied operations
6
581 - Specific topics in natural history
5
630 - Agriculture & related technologies
5
414 - Phonology & phonetics
3
500 - Natural sciences & mathematics
3
530 - Physics
3
657 - Accounting
3
658 - General management
3
720 - Architecture
3
800 - Literature & rhetoric
3
100 - Philosophy & psychology
2
170 - Ethics
2
297 - Islam, Babism & Bahai Faith
2
304 - Factors affecting social behavior
2
400 - Language
2
410 - Linguistics
2
200 - Religion
1
301 - Sociology & anthropology
1
350 - Public administration & military science
1
550 - Earth sciences
1
780 - Music
1
791 - Public performances
1