Classification
000 - Computer science, information & general works
1
100 - Philosophy & psychology
2
140 - Specific philosophical schools
6
170 - Ethics
1
200 - Religion
1
300 - Social sciences
6
301 - Sociology & anthropology
2
320 - Political science
5
330 - Economics
12
333 - Economics of land & energy
5
340 - Law
1
363 - Other social problems & services
370 - Education
2
410 - Linguistics
2
500 - Natural sciences & mathematics
3
540 - Chemistry & allied sciences
5
551 - Geology, hydrology & meteorology
6
581 - Specific topics in natural history
6
600 - Technology
11
620 - Engineering & allied operations
10
630 - Agriculture & related technologies
1
700 - The arts; fine & decorative arts
6
720 - Architecture
2
800 - Literature & rhetoric
4
900 - History & geography