Classification
000 - Computer science, information & general works
330 - Economics
363 - Other social problems & services
900 - History & geography
600 - Technology
11
620 - Engineering & allied operations
10
700 - The arts; fine & decorative arts
10
333 - Economics of land & energy
9
380 - Commerce, communications & transportation
8
320 - Political science
5
140 - Specific philosophical schools
4
720 - Architecture
4
370 - Education
3
576 - Genetics & evolution
3
658 - General management
3
400 - Language
2
551 - Geology, hydrology & meteorology
2
581 - Specific topics in natural history
2
610 - Medicine & health
2
301 - Sociology & anthropology
1
340 - Law
1
414 - Phonology & phonetics
1
630 - Agriculture & related technologies
1
800 - Literature & rhetoric
1