Classification
370 - Education
330 - Economics
49
320 - Political science
46
333 - Economics of land & energy
35
700 - The arts; fine & decorative arts
33
900 - History & geography
33
600 - Technology
27
363 - Other social problems & services
26
380 - Commerce, communications & transportation
18
300 - Social sciences
16
620 - Engineering & allied operations
16
000 - Computer science, information & general works
14
140 - Specific philosophical schools
14
100 - Philosophy & psychology
13
610 - Medicine & health
13
400 - Language
11
500 - Natural sciences & mathematics
8
658 - General management
8
200 - Religion
7
800 - Literature & rhetoric
6
170 - Ethics
5
340 - Law
5
304 - Factors affecting social behavior
4
410 - Linguistics
4
576 - Genetics & evolution
4
540 - Chemistry & allied sciences
3
630 - Agriculture & related technologies
3
657 - Accounting
3
720 - Architecture
3
780 - Music
3
297 - Islam, Babism & Bahai Faith
2
301 - Sociology & anthropology
2
350 - Public administration & military science
2
371 - Schools & their activities; special education
2
581 - Specific topics in natural history
2
153 - Mental processes & intelligence
1
174 - Occupational ethics
1
336 - Public finance
1
364 - Criminology
1
384 - Communications; telecommunication
1
530 - Physics
1
551 - Geology, hydrology & meteorology
1
580 - Plants (Botany)
1
770 - Photography, photographs & computer art
1