Classification
000 - Computer science, information & general works
340 - Law
363 - Other social problems & services
370 - Education
700 - The arts; fine & decorative arts
5
380 - Commerce, communications & transportation
4
600 - Technology
4
330 - Economics
3
333 - Economics of land & energy
3
620 - Engineering & allied operations
3
900 - History & geography
3
300 - Social sciences
2
100 - Philosophy & psychology
1
200 - Religion
1
301 - Sociology & anthropology
1
304 - Factors affecting social behavior
1
320 - Political science
1
414 - Phonology & phonetics
1
610 - Medicine & health
1
720 - Architecture
1