Classification
370 - Education
17
320 - Political science
11
600 - Technology
4
300 - Social sciences
3
330 - Economics
3
333 - Economics of land & energy
3
340 - Law
3
500 - Natural sciences & mathematics
3
100 - Philosophy & psychology
2
363 - Other social problems & services
2
380 - Commerce, communications & transportation
2
400 - Language
2
700 - The arts; fine & decorative arts
2
000 - Computer science, information & general works
1
200 - Religion
1
410 - Linguistics
1
414 - Phonology & phonetics
1
551 - Geology, hydrology & meteorology
1
620 - Engineering & allied operations
1
720 - Architecture
1
900 - History & geography
1