Classification
200 - Religion
300 - Social sciences
2
301 - Sociology & anthropology
320 - Political science
330 - Economics
2
400 - Language
900 - History & geography
2
000 - Computer science, information & general works
1
100 - Philosophy & psychology
1
120 - Epistemology, causation & humankind
1
333 - Economics of land & energy
1
340 - Law
1
363 - Other social problems & services
1
380 - Commerce, communications & transportation
1
410 - Linguistics
1
600 - Technology
1
700 - The arts; fine & decorative arts
1
800 - Literature & rhetoric
1