Classification
320 - Political science
330 - Economics
44
333 - Economics of land & energy
42
700 - The arts; fine & decorative arts
38
363 - Other social problems & services
32
000 - Computer science, information & general works
28
600 - Technology
26
380 - Commerce, communications & transportation
24
551 - Geology, hydrology & meteorology
24
900 - History & geography
19
610 - Medicine & health
15
581 - Specific topics in natural history
12
140 - Specific philosophical schools
11
370 - Education
11
620 - Engineering & allied operations
11
630 - Agriculture & related technologies
7
720 - Architecture
7
300 - Social sciences
6
304 - Factors affecting social behavior
5
658 - General management
5
400 - Language
4
580 - Plants (Botany)
4
301 - Sociology & anthropology
3
340 - Law
3
576 - Genetics & evolution
3
800 - Literature & rhetoric
3
100 - Philosophy & psychology
2
170 - Ethics
2
200 - Religion
2
361 - Social problems & social welfare in general
2
414 - Phonology & phonetics
2
336 - Public finance
1
360 - Social problems & services; associations
1
410 - Linguistics
1
500 - Natural sciences & mathematics
1
540 - Chemistry & allied sciences
1
550 - Earth sciences
1
657 - Accounting
1
791 - Public performances
1