Classification
370 - Education
333 - Economics of land & energy
7
000 - Computer science, information & general works
6
140 - Specific philosophical schools
6
700 - The arts; fine & decorative arts
6
900 - History & geography
6
330 - Economics
5
363 - Other social problems & services
5
600 - Technology
5
380 - Commerce, communications & transportation
4
551 - Geology, hydrology & meteorology
4
610 - Medicine & health
4
576 - Genetics & evolution
3
170 - Ethics
2
320 - Political science
2
581 - Specific topics in natural history
2
620 - Engineering & allied operations
2
100 - Philosophy & psychology
1
200 - Religion
1
297 - Islam, Babism & Bahai Faith
1
361 - Social problems & social welfare in general
1
400 - Language
1
414 - Phonology & phonetics
1
530 - Physics
1
657 - Accounting
1
658 - General management
1
720 - Architecture
1