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