Classification
100 - Philosophy & psychology
791 - Public performances
900 - History & geography
4
320 - Political science
3
800 - Literature & rhetoric
3
170 - Ethics
2
000 - Computer science, information & general works
1
140 - Specific philosophical schools
1
200 - Religion
1
370 - Education
1
380 - Commerce, communications & transportation
1
400 - Language
1
581 - Specific topics in natural history
1
600 - Technology
1
700 - The arts; fine & decorative arts
1