Classification
140 - Specific philosophical schools
330 - Economics
380 - Commerce, communications & transportation
700 - The arts; fine & decorative arts
36
363 - Other social problems & services
33
000 - Computer science, information & general works
32
333 - Economics of land & energy
30
600 - Technology
30
610 - Medicine & health
28
900 - History & geography
17
551 - Geology, hydrology & meteorology
16
620 - Engineering & allied operations
16
320 - Political science
15
370 - Education
13
576 - Genetics & evolution
9
658 - General management
9
400 - Language
7
720 - Architecture
7
340 - Law
6
580 - Plants (Botany)
6
581 - Specific topics in natural history
6
630 - Agriculture & related technologies
6
800 - Literature & rhetoric
6
100 - Philosophy & psychology
5
300 - Social sciences
5
500 - Natural sciences & mathematics
5
170 - Ethics
4
304 - Factors affecting social behavior
4
297 - Islam, Babism & Bahai Faith
3
414 - Phonology & phonetics
3
657 - Accounting
3
200 - Religion
2
361 - Social problems & social welfare in general
2
410 - Linguistics
2
540 - Chemistry & allied sciences
2
160 - Logic
1
301 - Sociology & anthropology
1
336 - Public finance
1
530 - Physics
1
550 - Earth sciences
1