Classification
330 - Economics
900 - History & geography
320 - Political science
1,407
300 - Social sciences
438
576 - Genetics & evolution
320
340 - Law
135
700 - The arts; fine & decorative arts
30
333 - Economics of land & energy
19
000 - Computer science, information & general works
13
363 - Other social problems & services
11
380 - Commerce, communications & transportation
11
100 - Philosophy & psychology
10
301 - Sociology & anthropology
9
600 - Technology
8
336 - Public finance
7
630 - Agriculture & related technologies
7
610 - Medicine & health
6
620 - Engineering & allied operations
6
200 - Religion
5
304 - Factors affecting social behavior
4
140 - Specific philosophical schools
3
350 - Public administration & military science
3
400 - Language
3
500 - Natural sciences & mathematics
3
581 - Specific topics in natural history
3
800 - Literature & rhetoric
3
410 - Linguistics
2
530 - Physics
2
657 - Accounting
2
120 - Epistemology, causation & humankind
1
160 - Logic
1
170 - Ethics
1
274 - History of Christianity in Europe
1
370 - Education
1
414 - Phonology & phonetics
1
551 - Geology, hydrology & meteorology
1
580 - Plants (Botany)
1
658 - General management
1