Classification
140 - Specific philosophical schools
370 - Education
210
700 - The arts; fine & decorative arts
66
333 - Economics of land & energy
57
610 - Medicine & health
53
900 - History & geography
52
100 - Philosophy & psychology
51
320 - Political science
46
300 - Social sciences
45
330 - Economics
41
600 - Technology
41
000 - Computer science, information & general works
40
363 - Other social problems & services
39
380 - Commerce, communications & transportation
32
340 - Law
28
200 - Religion
21
170 - Ethics
20
400 - Language
19
620 - Engineering & allied operations
17
301 - Sociology & anthropology
15
576 - Genetics & evolution
15
800 - Literature & rhetoric
14
551 - Geology, hydrology & meteorology
12
410 - Linguistics
11
304 - Factors affecting social behavior
10
658 - General management
9
297 - Islam, Babism & Bahai Faith
7
500 - Natural sciences & mathematics
6
720 - Architecture
6
530 - Physics
5
780 - Music
5
580 - Plants (Botany)
4
581 - Specific topics in natural history
4
770 - Photography, photographs & computer art
4
630 - Agriculture & related technologies
3
120 - Epistemology, causation & humankind
2
350 - Public administration & military science
2
360 - Social problems & services; associations
2
361 - Social problems & social welfare in general
2
364 - Criminology
2
414 - Phonology & phonetics
2
160 - Logic
1
174 - Occupational ethics
1
657 - Accounting
1
838 - German miscellaneous writings
1