Classification
000 - Computer science, information & general works
3
140 - Specific philosophical schools
3
200 - Religion
361 - Social problems & social welfare in general
380 - Commerce, communications & transportation
600 - Technology
3
320 - Political science
2
363 - Other social problems & services
2
581 - Specific topics in natural history
2
700 - The arts; fine & decorative arts
2
170 - Ethics
1
301 - Sociology & anthropology
1
330 - Economics
1
370 - Education
1
610 - Medicine & health
1
900 - History & geography
1