Classification
370 - Education
100 - Philosophy & psychology
82
300 - Social sciences
70
900 - History & geography
55
700 - The arts; fine & decorative arts
37
320 - Political science
34
333 - Economics of land & energy
34
600 - Technology
34
400 - Language
33
380 - Commerce, communications & transportation
23
330 - Economics
22
140 - Specific philosophical schools
17
200 - Religion
16
304 - Factors affecting social behavior
16
410 - Linguistics
15
610 - Medicine & health
14
500 - Natural sciences & mathematics
13
340 - Law
12
000 - Computer science, information & general works
11
363 - Other social problems & services
10
800 - Literature & rhetoric
9
170 - Ethics
6
297 - Islam, Babism & Bahai Faith
6
301 - Sociology & anthropology
6
780 - Music
6
414 - Phonology & phonetics
5
576 - Genetics & evolution
5
120 - Epistemology, causation & humankind
3
361 - Social problems & social welfare in general
3
530 - Physics
3
551 - Geology, hydrology & meteorology
3
791 - Public performances
3
350 - Public administration & military science
2
581 - Specific topics in natural history
2
720 - Architecture
2
770 - Photography, photographs & computer art
2
360 - Social problems & services; associations
1
658 - General management
1
920 - Biography, genealogy & insignia
1