Classification
320 - Political science
380 - Commerce, communications & transportation
658 - General management
330 - Economics
14
600 - Technology
8
700 - The arts; fine & decorative arts
7
333 - Economics of land & energy
6
363 - Other social problems & services
5
370 - Education
5
000 - Computer science, information & general works
3
140 - Specific philosophical schools
3
340 - Law
3
551 - Geology, hydrology & meteorology
3
576 - Genetics & evolution
3
610 - Medicine & health
3
620 - Engineering & allied operations
3
900 - History & geography
3
100 - Philosophy & psychology
2
170 - Ethics
2
297 - Islam, Babism & Bahai Faith
2
300 - Social sciences
2
350 - Public administration & military science
2
580 - Plants (Botany)
2
800 - Literature & rhetoric
2
336 - Public finance
1
361 - Social problems & social welfare in general
1
400 - Language
1
581 - Specific topics in natural history
1
720 - Architecture
1
780 - Music
1
791 - Public performances
1