Classification
000 - Computer science, information & general works
4
100 - Philosophy & psychology
10
140 - Specific philosophical schools
170 - Ethics
200 - Religion
6
300 - Social sciences
7
301 - Sociology & anthropology
3
304 - Factors affecting social behavior
2
320 - Political science
8
330 - Economics
333 - Economics of land & energy
12
340 - Law
2
361 - Social problems & social welfare in general
2
363 - Other social problems & services
6
370 - Education
3
380 - Commerce, communications & transportation
3
551 - Geology, hydrology & meteorology
2
581 - Specific topics in natural history
2
600 - Technology
6
610 - Medicine & health
3
620 - Engineering & allied operations
2
630 - Agriculture & related technologies
1
658 - General management
2
700 - The arts; fine & decorative arts
6
800 - Literature & rhetoric
1
900 - History & geography
5