Classification
900 - History & geography
131
791 - Public performances
127
700 - The arts; fine & decorative arts
43
320 - Political science
16
306 - Culture & institutions
14
380 - Commerce, communications & transportation
11
800 - Literature & rhetoric
11
100 - Philosophy & psychology
10
300 - Social sciences
10
302 - Social interaction
8
170 - Ethics
5
370 - Education
4
384 - Communications; telecommunication
4
770 - Photography, photographs & computer art
4
120 - Epistemology, causation & humankind
3
301 - Sociology & anthropology
3
330 - Economics
3
410 - Linguistics
3
600 - Technology
3
780 - Music
3
809 - History, description & criticism
3
140 - Specific philosophical schools
2
305 - Social groups
2
363 - Other social problems & services
2
400 - Language
2
581 - Specific topics in natural history
2
610 - Medicine & health
2
801 - Philosophy & theory
2
973 - United States
2
000 - Computer science, information & general works
1
070 - News media, journalism & publishing
1
128 - Humankind
1
155 - Differential & developmental psychology
1
200 - Religion
1
340 - Law
1
364 - Criminology
1
418 - Standard usage & applied linguistics
1
530 - Physics
1
576 - Genetics & evolution
1
612 - Human physiology
1
620 - Engineering & allied operations
1
751 - Techniques, equipment, materials & forms
1
777 - [Unassigned]
1
781 - General principles & musical forms
1
782 - Vocal music
1
792 - Stage presentations
1
940 - History of Europe
1
941 - British Isles
1