Classification
330 - Economics
340 - Law
620 - Engineering & allied operations
900 - History & geography
600 - Technology
14
380 - Commerce, communications & transportation
10
700 - The arts; fine & decorative arts
8
333 - Economics of land & energy
6
320 - Political science
5
000 - Computer science, information & general works
4
300 - Social sciences
4
363 - Other social problems & services
4
370 - Education
4
500 - Natural sciences & mathematics
4
140 - Specific philosophical schools
3
576 - Genetics & evolution
3
100 - Philosophy & psychology
2
200 - Religion
2
301 - Sociology & anthropology
2
400 - Language
2
551 - Geology, hydrology & meteorology
2
580 - Plants (Botany)
2
658 - General management
2
170 - Ethics
1
297 - Islam, Babism & Bahai Faith
1
304 - Factors affecting social behavior
1
410 - Linguistics
1
414 - Phonology & phonetics
1
610 - Medicine & health
1
630 - Agriculture & related technologies
1
657 - Accounting
1
720 - Architecture
1
780 - Music
1
800 - Literature & rhetoric
1