Classification
340 - Law
900 - History & geography
67
320 - Political science
63
140 - Specific philosophical schools
43
300 - Social sciences
42
700 - The arts; fine & decorative arts
33
100 - Philosophy & psychology
32
330 - Economics
27
200 - Religion
23
363 - Other social problems & services
19
370 - Education
19
301 - Sociology & anthropology
18
380 - Commerce, communications & transportation
16
304 - Factors affecting social behavior
15
333 - Economics of land & energy
12
170 - Ethics
11
610 - Medicine & health
11
800 - Literature & rhetoric
9
400 - Language
8
000 - Computer science, information & general works
7
297 - Islam, Babism & Bahai Faith
6
361 - Social problems & social welfare in general
6
364 - Criminology
6
600 - Technology
5
620 - Engineering & allied operations
5
576 - Genetics & evolution
3
780 - Music
3
120 - Epistemology, causation & humankind
2
410 - Linguistics
2
530 - Physics
2
551 - Geology, hydrology & meteorology
2
581 - Specific topics in natural history
2
630 - Agriculture & related technologies
2
160 - Logic
1
500 - Natural sciences & mathematics
1
520 - Astronomy & allied sciences
1
540 - Chemistry & allied sciences
1
580 - Plants (Botany)
1
590 - Animals (Zoology)
1
720 - Architecture
1