Classification
300 - Social sciences
330 - Economics
363 - Other social problems & services
620 - Engineering & allied operations
700 - The arts; fine & decorative arts
333 - Economics of land & energy
5
600 - Technology
5
140 - Specific philosophical schools
4
630 - Agriculture & related technologies
4
301 - Sociology & anthropology
3
610 - Medicine & health
3
320 - Political science
2
340 - Law
2
370 - Education
2
900 - History & geography
2
100 - Philosophy & psychology
1
200 - Religion
1
297 - Islam, Babism & Bahai Faith
1
304 - Factors affecting social behavior
1
350 - Public administration & military science
1
380 - Commerce, communications & transportation
1
400 - Language
1
500 - Natural sciences & mathematics
1
540 - Chemistry & allied sciences
1
551 - Geology, hydrology & meteorology
1
720 - Architecture
1
800 - Literature & rhetoric
1