Classification
333 - Economics of land & energy
3
340 - Law
370 - Education
100 - Philosophy & psychology
2
400 - Language
2
140 - Specific philosophical schools
1
170 - Ethics
1
200 - Religion
1
297 - Islam, Babism & Bahai Faith
1
320 - Political science
1
363 - Other social problems & services
1
380 - Commerce, communications & transportation
1
500 - Natural sciences & mathematics
1
700 - The arts; fine & decorative arts
1
780 - Music
1
900 - History & geography
1