Classification
300 - Social sciences
4
301 - Sociology & anthropology
620 - Engineering & allied operations
700 - The arts; fine & decorative arts
4
330 - Economics
3
600 - Technology
3
900 - History & geography
3
200 - Religion
2
363 - Other social problems & services
2
380 - Commerce, communications & transportation
2
720 - Architecture
2
100 - Philosophy & psychology
1
140 - Specific philosophical schools
1
297 - Islam, Babism & Bahai Faith
1
320 - Political science
1
340 - Law
1
370 - Education
1
530 - Physics
1
610 - Medicine & health
1
630 - Agriculture & related technologies
1
800 - Literature & rhetoric
1