Classification
140 - Specific philosophical schools
320 - Political science
600 - Technology
700 - The arts; fine & decorative arts
32
363 - Other social problems & services
25
333 - Economics of land & energy
23
620 - Engineering & allied operations
23
330 - Economics
22
000 - Computer science, information & general works
18
900 - History & geography
17
380 - Commerce, communications & transportation
16
100 - Philosophy & psychology
12
300 - Social sciences
12
340 - Law
11
170 - Ethics
10
551 - Geology, hydrology & meteorology
10
581 - Specific topics in natural history
9
610 - Medicine & health
9
200 - Religion
7
370 - Education
7
720 - Architecture
7
301 - Sociology & anthropology
6
576 - Genetics & evolution
6
361 - Social problems & social welfare in general
5
630 - Agriculture & related technologies
5
500 - Natural sciences & mathematics
4
800 - Literature & rhetoric
4
120 - Epistemology, causation & humankind
3
304 - Factors affecting social behavior
3
580 - Plants (Botany)
3
658 - General management
3
297 - Islam, Babism & Bahai Faith
1
336 - Public finance
1
364 - Criminology
1
530 - Physics
1
657 - Accounting
1