Classification
301 - Sociology & anthropology
620 - Engineering & allied operations
600 - Technology
18
300 - Social sciences
17
363 - Other social problems & services
8
630 - Agriculture & related technologies
8
330 - Economics
7
700 - The arts; fine & decorative arts
7
900 - History & geography
7
100 - Philosophy & psychology
5
140 - Specific philosophical schools
5
370 - Education
4
200 - Religion
3
320 - Political science
3
333 - Economics of land & energy
3
540 - Chemistry & allied sciences
3
576 - Genetics & evolution
3
610 - Medicine & health
3
340 - Law
2
380 - Commerce, communications & transportation
2
500 - Natural sciences & mathematics
2
720 - Architecture
2
780 - Music
2
005 - Computer programming, programs & data
1
297 - Islam, Babism & Bahai Faith
1
304 - Factors affecting social behavior
1
400 - Language
1
410 - Linguistics
1
530 - Physics
1
800 - Literature & rhetoric
1