Classification
100 - Philosophy & psychology
340 - Law
320 - Political science
192
900 - History & geography
135
300 - Social sciences
83
330 - Economics
77
200 - Religion
72
170 - Ethics
62
140 - Specific philosophical schools
45
700 - The arts; fine & decorative arts
44
610 - Medicine & health
34
370 - Education
20
301 - Sociology & anthropology
19
000 - Computer science, information & general works
18
600 - Technology
13
333 - Economics of land & energy
12
576 - Genetics & evolution
12
297 - Islam, Babism & Bahai Faith
11
363 - Other social problems & services
11
400 - Language
11
120 - Epistemology, causation & humankind
10
361 - Social problems & social welfare in general
9
364 - Criminology
9
380 - Commerce, communications & transportation
8
800 - Literature & rhetoric
8
530 - Physics
7
620 - Engineering & allied operations
7
500 - Natural sciences & mathematics
6
410 - Linguistics
5
581 - Specific topics in natural history
5
304 - Factors affecting social behavior
4
780 - Music
4
336 - Public finance
3
360 - Social problems & services; associations
3
160 - Logic
2
296 - Judaism
2
551 - Geology, hydrology & meteorology
2
658 - General management
2
770 - Photography, photographs & computer art
2
303 - Social processes
1
350 - Public administration & military science
1
580 - Plants (Botany)
1
630 - Agriculture & related technologies
1
720 - Architecture
1