Classification
100 - Philosophy & psychology
320 - Political science
900 - History & geography
23
300 - Social sciences
17
170 - Ethics
16
140 - Specific philosophical schools
15
330 - Economics
14
200 - Religion
9
340 - Law
9
301 - Sociology & anthropology
8
333 - Economics of land & energy
8
700 - The arts; fine & decorative arts
8
370 - Education
7
600 - Technology
6
800 - Literature & rhetoric
6
380 - Commerce, communications & transportation
5
120 - Epistemology, causation & humankind
3
581 - Specific topics in natural history
3
610 - Medicine & health
3
000 - Computer science, information & general works
2
304 - Factors affecting social behavior
2
363 - Other social problems & services
2
551 - Geology, hydrology & meteorology
2
620 - Engineering & allied operations
2
296 - Judaism
1
297 - Islam, Babism & Bahai Faith
1
361 - Social problems & social welfare in general
1
364 - Criminology
1
530 - Physics
1
576 - Genetics & evolution
1
630 - Agriculture & related technologies
1
657 - Accounting
1
770 - Photography, photographs & computer art
1