Classification
000 - Computer science, information & general works
100 - Philosophy & psychology
320 - Political science
380 - Commerce, communications & transportation
370 - Education
5
700 - The arts; fine & decorative arts
4
300 - Social sciences
3
400 - Language
3
330 - Economics
2
363 - Other social problems & services
2
410 - Linguistics
2
600 - Technology
2
170 - Ethics
1
301 - Sociology & anthropology
1
333 - Economics of land & energy
1
340 - Law
1
551 - Geology, hydrology & meteorology
1
610 - Medicine & health
1
620 - Engineering & allied operations
1
630 - Agriculture & related technologies
1
780 - Music
1
800 - Literature & rhetoric
1
900 - History & geography
1