Classification
200 - Religion
320 - Political science
81
900 - History & geography
68
330 - Economics
35
300 - Social sciences
29
297 - Islam, Babism & Bahai Faith
26
700 - The arts; fine & decorative arts
25
140 - Specific philosophical schools
24
100 - Philosophy & psychology
22
800 - Literature & rhetoric
22
301 - Sociology & anthropology
20
340 - Law
16
370 - Education
12
400 - Language
12
576 - Genetics & evolution
12
333 - Economics of land & energy
11
296 - Judaism
9
170 - Ethics
8
410 - Linguistics
7
304 - Factors affecting social behavior
6
363 - Other social problems & services
6
398 - Folklore
6
581 - Specific topics in natural history
6
600 - Technology
6
000 - Computer science, information & general works
5
380 - Commerce, communications & transportation
5
610 - Medicine & health
5
530 - Physics
3
620 - Engineering & allied operations
3
630 - Agriculture & related technologies
3
500 - Natural sciences & mathematics
2
520 - Astronomy & allied sciences
2
720 - Architecture
2
780 - Music
2
120 - Epistemology, causation & humankind
1
360 - Social problems & services; associations
1
364 - Criminology
1
551 - Geology, hydrology & meteorology
1