Classification
900 - History & geography
17
320 - Political science
10
800 - Literature & rhetoric
6
297 - Islam, Babism & Bahai Faith
5
200 - Religion
4
300 - Social sciences
4
700 - The arts; fine & decorative arts
4
330 - Economics
3
333 - Economics of land & energy
3
340 - Law
3
304 - Factors affecting social behavior
2
380 - Commerce, communications & transportation
2
000 - Computer science, information & general works
1
100 - Philosophy & psychology
1
120 - Epistemology, causation & humankind
1
370 - Education
1
400 - Language
1
410 - Linguistics
1
576 - Genetics & evolution
1
580 - Plants (Botany)
1
600 - Technology
1
610 - Medicine & health
1