Classification
340 - Law
370 - Education
380 - Commerce, communications & transportation
330 - Economics
4
333 - Economics of land & energy
4
400 - Language
4
600 - Technology
4
620 - Engineering & allied operations
4
700 - The arts; fine & decorative arts
4
000 - Computer science, information & general works
3
200 - Religion
3
363 - Other social problems & services
3
410 - Linguistics
3
900 - History & geography
3
100 - Philosophy & psychology
2
300 - Social sciences
2
414 - Phonology & phonetics
2
140 - Specific philosophical schools
1
170 - Ethics
1
297 - Islam, Babism & Bahai Faith
1
301 - Sociology & anthropology
1
304 - Factors affecting social behavior
1
320 - Political science
1
610 - Medicine & health
1
658 - General management
1
720 - Architecture
1
780 - Music
1