Classification
170 - Ethics
370 - Education
100 - Philosophy & psychology
32
320 - Political science
21
140 - Specific philosophical schools
20
900 - History & geography
20
330 - Economics
18
700 - The arts; fine & decorative arts
16
610 - Medicine & health
15
333 - Economics of land & energy
14
300 - Social sciences
13
600 - Technology
13
200 - Religion
12
000 - Computer science, information & general works
11
380 - Commerce, communications & transportation
10
340 - Law
9
363 - Other social problems & services
6
297 - Islam, Babism & Bahai Faith
5
301 - Sociology & anthropology
5
400 - Language
5
551 - Geology, hydrology & meteorology
5
304 - Factors affecting social behavior
4
361 - Social problems & social welfare in general
4
800 - Literature & rhetoric
3
120 - Epistemology, causation & humankind
2
530 - Physics
2
620 - Engineering & allied operations
2
770 - Photography, photographs & computer art
2
160 - Logic
1
174 - Occupational ethics
1
350 - Public administration & military science
1
360 - Social problems & services; associations
1
410 - Linguistics
1
414 - Phonology & phonetics
1
500 - Natural sciences & mathematics
1
576 - Genetics & evolution
1
580 - Plants (Botany)
1
581 - Specific topics in natural history
1
657 - Accounting
1
658 - General management
1