Classification
100 - Philosophy & psychology
300 - Social sciences
320 - Political science
126
370 - Education
98
900 - History & geography
64
200 - Religion
48
301 - Sociology & anthropology
42
330 - Economics
40
700 - The arts; fine & decorative arts
37
340 - Law
36
140 - Specific philosophical schools
26
600 - Technology
26
333 - Economics of land & energy
21
610 - Medicine & health
21
170 - Ethics
19
000 - Computer science, information & general works
17
400 - Language
13
304 - Factors affecting social behavior
10
576 - Genetics & evolution
10
120 - Epistemology, causation & humankind
9
361 - Social problems & social welfare in general
9
363 - Other social problems & services
9
380 - Commerce, communications & transportation
9
410 - Linguistics
9
500 - Natural sciences & mathematics
9
800 - Literature & rhetoric
9
620 - Engineering & allied operations
8
780 - Music
8
530 - Physics
7
581 - Specific topics in natural history
6
360 - Social problems & services; associations
5
364 - Criminology
5
770 - Photography, photographs & computer art
4
297 - Islam, Babism & Bahai Faith
3
540 - Chemistry & allied sciences
2
630 - Agriculture & related technologies
2
658 - General management
2
720 - Architecture
2
296 - Judaism
1
414 - Phonology & phonetics
1
791 - Public performances
1