Classification
320 - Political science
66
900 - History & geography
64
700 - The arts; fine & decorative arts
40
100 - Philosophy & psychology
35
200 - Religion
27
300 - Social sciences
26
140 - Specific philosophical schools
22
330 - Economics
21
370 - Education
21
333 - Economics of land & energy
20
340 - Law
18
800 - Literature & rhetoric
18
301 - Sociology & anthropology
13
000 - Computer science, information & general works
12
170 - Ethics
11
304 - Factors affecting social behavior
10
600 - Technology
10
297 - Islam, Babism & Bahai Faith
9
363 - Other social problems & services
9
380 - Commerce, communications & transportation
9
610 - Medicine & health
8
400 - Language
7
620 - Engineering & allied operations
7
576 - Genetics & evolution
5
361 - Social problems & social welfare in general
4
780 - Music
4
551 - Geology, hydrology & meteorology
3
581 - Specific topics in natural history
3
410 - Linguistics
2
540 - Chemistry & allied sciences
2
720 - Architecture
2
120 - Epistemology, causation & humankind
1
296 - Judaism
1
530 - Physics
1
580 - Plants (Botany)
1
770 - Photography, photographs & computer art
1