Classification
300 - Social sciences
370 - Education
900 - History & geography
100 - Philosophy & psychology
13
320 - Political science
7
140 - Specific philosophical schools
5
330 - Economics
5
600 - Technology
5
301 - Sociology & anthropology
4
333 - Economics of land & energy
4
340 - Law
4
620 - Engineering & allied operations
4
700 - The arts; fine & decorative arts
4
380 - Commerce, communications & transportation
3
610 - Medicine & health
3
800 - Literature & rhetoric
3
200 - Religion
2
304 - Factors affecting social behavior
2
363 - Other social problems & services
2
400 - Language
2
170 - Ethics
1
297 - Islam, Babism & Bahai Faith
1
410 - Linguistics
1
500 - Natural sciences & mathematics
1
530 - Physics
1
576 - Genetics & evolution
1
658 - General management
1
720 - Architecture
1
770 - Photography, photographs & computer art
1