Classification
200 - Religion
576 - Genetics & evolution
900 - History & geography
320 - Political science
8
100 - Philosophy & psychology
4
700 - The arts; fine & decorative arts
4
330 - Economics
3
297 - Islam, Babism & Bahai Faith
2
300 - Social sciences
2
333 - Economics of land & energy
2
600 - Technology
2
140 - Specific philosophical schools
1
170 - Ethics
1
296 - Judaism
1
304 - Factors affecting social behavior
1
370 - Education
1
380 - Commerce, communications & transportation
1
398 - Folklore
1
551 - Geology, hydrology & meteorology
1
581 - Specific topics in natural history
1
630 - Agriculture & related technologies
1
800 - Literature & rhetoric
1