Classification
000 - Computer science, information & general works
363 - Other social problems & services
380 - Commerce, communications & transportation
576 - Genetics & evolution
900 - History & geography
600 - Technology
4
700 - The arts; fine & decorative arts
4
620 - Engineering & allied operations
3
140 - Specific philosophical schools
2
330 - Economics
2
333 - Economics of land & energy
2
530 - Physics
2
610 - Medicine & health
2
720 - Architecture
2
304 - Factors affecting social behavior
1
340 - Law
1
364 - Criminology
1
400 - Language
1
551 - Geology, hydrology & meteorology
1
581 - Specific topics in natural history
1
650 - Management & auxiliary services
1
658 - General management
1
800 - Literature & rhetoric
1