Classification
000 - Computer science, information & general works
380 - Commerce, communications & transportation
330 - Economics
7
333 - Economics of land & energy
6
363 - Other social problems & services
6
600 - Technology
6
657 - Accounting
6
140 - Specific philosophical schools
5
320 - Political science
5
700 - The arts; fine & decorative arts
4
551 - Geology, hydrology & meteorology
3
900 - History & geography
3
370 - Education
2
576 - Genetics & evolution
2
581 - Specific topics in natural history
2
620 - Engineering & allied operations
2
800 - Literature & rhetoric
2
414 - Phonology & phonetics
1
530 - Physics
1
580 - Plants (Botany)
1
610 - Medicine & health
1
720 - Architecture
1