Classification
370 - Education
380 - Commerce, communications & transportation
620 - Engineering & allied operations
600 - Technology
18
900 - History & geography
18
700 - The arts; fine & decorative arts
16
363 - Other social problems & services
13
333 - Economics of land & energy
11
330 - Economics
10
000 - Computer science, information & general works
9
400 - Language
6
140 - Specific philosophical schools
5
300 - Social sciences
5
320 - Political science
5
340 - Law
5
720 - Architecture
5
500 - Natural sciences & mathematics
4
610 - Medicine & health
4
658 - General management
4
780 - Music
4
100 - Philosophy & psychology
3
200 - Religion
2
304 - Factors affecting social behavior
2
551 - Geology, hydrology & meteorology
2
576 - Genetics & evolution
2
580 - Plants (Botany)
2
800 - Literature & rhetoric
2
170 - Ethics
1
297 - Islam, Babism & Bahai Faith
1
301 - Sociology & anthropology
1
410 - Linguistics
1
540 - Chemistry & allied sciences
1
630 - Agriculture & related technologies
1