Classification
100 - Philosophy & psychology
3
300 - Social sciences
320 - Political science
3
330 - Economics
400 - Language
410 - Linguistics
700 - The arts; fine & decorative arts
900 - History & geography
000 - Computer science, information & general works
2
333 - Economics of land & energy
2
370 - Education
2
120 - Epistemology, causation & humankind
1
200 - Religion
1
301 - Sociology & anthropology
1
340 - Law
1
363 - Other social problems & services
1
380 - Commerce, communications & transportation
1
600 - Technology
1
620 - Engineering & allied operations
1
630 - Agriculture & related technologies
1
658 - General management
1
770 - Photography, photographs & computer art
1
780 - Music
1
800 - Literature & rhetoric
1