Classification
363 - Other social problems & services
370 - Education
380 - Commerce, communications & transportation
700 - The arts; fine & decorative arts
900 - History & geography
330 - Economics
9
333 - Economics of land & energy
9
600 - Technology
9
620 - Engineering & allied operations
7
720 - Architecture
7
000 - Computer science, information & general works
6
320 - Political science
5
140 - Specific philosophical schools
4
610 - Medicine & health
4
340 - Law
3
551 - Geology, hydrology & meteorology
3
200 - Religion
2
400 - Language
2
658 - General management
2
800 - Literature & rhetoric
2
297 - Islam, Babism & Bahai Faith
1
300 - Social sciences
1
301 - Sociology & anthropology
1
304 - Factors affecting social behavior
1
414 - Phonology & phonetics
1
580 - Plants (Botany)
1
581 - Specific topics in natural history
1