Classification
000 - Computer science, information & general works
100 - Philosophy & psychology
333 - Economics of land & energy
2
610 - Medicine & health
2
140 - Specific philosophical schools
1
200 - Religion
1
301 - Sociology & anthropology
1
363 - Other social problems & services
1
380 - Commerce, communications & transportation
1
400 - Language
1
530 - Physics
1
581 - Specific topics in natural history
1
900 - History & geography
1