Classification
320 - Political science
363 - Other social problems & services
380 - Commerce, communications & transportation
333 - Economics of land & energy
58
330 - Economics
52
700 - The arts; fine & decorative arts
35
600 - Technology
32
000 - Computer science, information & general works
27
551 - Geology, hydrology & meteorology
20
900 - History & geography
19
140 - Specific philosophical schools
18
370 - Education
13
610 - Medicine & health
13
576 - Genetics & evolution
11
620 - Engineering & allied operations
11
630 - Agriculture & related technologies
11
340 - Law
10
720 - Architecture
9
581 - Specific topics in natural history
8
304 - Factors affecting social behavior
7
336 - Public finance
6
800 - Literature & rhetoric
6
200 - Religion
5
658 - General management
5
300 - Social sciences
4
580 - Plants (Botany)
4
361 - Social problems & social welfare in general
3
410 - Linguistics
3
414 - Phonology & phonetics
3
500 - Natural sciences & mathematics
3
657 - Accounting
3
100 - Philosophy & psychology
2
301 - Sociology & anthropology
2
170 - Ethics
1
350 - Public administration & military science
1
530 - Physics
1
540 - Chemistry & allied sciences
1
550 - Earth sciences
1
650 - Management & auxiliary services
1
791 - Public performances
1