Classification
320 - Political science
900 - History & geography
330 - Economics
5
333 - Economics of land & energy
4
340 - Law
3
140 - Specific philosophical schools
2
300 - Social sciences
2
301 - Sociology & anthropology
2
363 - Other social problems & services
2
700 - The arts; fine & decorative arts
2
780 - Music
2
800 - Literature & rhetoric
2
200 - Religion
1
304 - Factors affecting social behavior
1
380 - Commerce, communications & transportation
1
400 - Language
1
410 - Linguistics
1
414 - Phonology & phonetics
1
551 - Geology, hydrology & meteorology
1
580 - Plants (Botany)
1
600 - Technology
1
610 - Medicine & health
1
620 - Engineering & allied operations
1
630 - Agriculture & related technologies
1