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