Classification
300 - Social sciences
900 - History & geography
320 - Political science
99
100 - Philosophy & psychology
64
700 - The arts; fine & decorative arts
44
304 - Factors affecting social behavior
41
340 - Law
30
301 - Sociology & anthropology
29
800 - Literature & rhetoric
25
200 - Religion
23
140 - Specific philosophical schools
22
600 - Technology
22
330 - Economics
21
370 - Education
17
380 - Commerce, communications & transportation
15
610 - Medicine & health
15
333 - Economics of land & energy
14
620 - Engineering & allied operations
12
363 - Other social problems & services
11
720 - Architecture
11
410 - Linguistics
9
576 - Genetics & evolution
9
780 - Music
9
000 - Computer science, information & general works
8
400 - Language
8
170 - Ethics
7
791 - Public performances
6
361 - Social problems & social welfare in general
4
364 - Criminology
4
770 - Photography, photographs & computer art
4
120 - Epistemology, causation & humankind
3
297 - Islam, Babism & Bahai Faith
3
500 - Natural sciences & mathematics
3
530 - Physics
3
581 - Specific topics in natural history
3
630 - Agriculture & related technologies
3
360 - Social problems & services; associations
2
580 - Plants (Botany)
2
658 - General management
2
296 - Judaism
1
414 - Phonology & phonetics
1
551 - Geology, hydrology & meteorology
1
657 - Accounting
1