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