Classification
900 - History & geography
12
800 - Literature & rhetoric
11
700 - The arts; fine & decorative arts
10
000 - Computer science, information & general works
7
300 - Social sciences
7
320 - Political science
6
400 - Language
6
380 - Commerce, communications & transportation
5
363 - Other social problems & services
4
330 - Economics
3
100 - Philosophy & psychology
2
140 - Specific philosophical schools
2
301 - Sociology & anthropology
2
304 - Factors affecting social behavior
2
340 - Law
2
370 - Education
2
410 - Linguistics
2
600 - Technology
2
620 - Engineering & allied operations
2
200 - Religion
1
398 - Folklore
1
576 - Genetics & evolution
1
770 - Photography, photographs & computer art
1
780 - Music
1
791 - Public performances
1