Classification
330 - Economics
720 - Architecture
320 - Political science
86
700 - The arts; fine & decorative arts
46
333 - Economics of land & energy
44
600 - Technology
41
900 - History & geography
41
000 - Computer science, information & general works
38
620 - Engineering & allied operations
37
363 - Other social problems & services
32
380 - Commerce, communications & transportation
24
610 - Medicine & health
16
140 - Specific philosophical schools
15
576 - Genetics & evolution
13
551 - Geology, hydrology & meteorology
12
300 - Social sciences
11
370 - Education
11
658 - General management
10
580 - Plants (Botany)
9
100 - Philosophy & psychology
7
630 - Agriculture & related technologies
7
500 - Natural sciences & mathematics
6
800 - Literature & rhetoric
6
200 - Religion
4
340 - Law
4
400 - Language
3
414 - Phonology & phonetics
3
530 - Physics
3
657 - Accounting
3
770 - Photography, photographs & computer art
3
780 - Music
3
170 - Ethics
2
297 - Islam, Babism & Bahai Faith
2
301 - Sociology & anthropology
2
304 - Factors affecting social behavior
2
540 - Chemistry & allied sciences
2
581 - Specific topics in natural history
2
338 - Production
1
410 - Linguistics
1
550 - Earth sciences
1