Classification
900 - History & geography
800 - Literature & rhetoric
12
370 - Education
7
610 - Medicine & health
7
200 - Religion
6
320 - Political science
5
700 - The arts; fine & decorative arts
4
100 - Philosophy & psychology
3
140 - Specific philosophical schools
3
340 - Law
3
400 - Language
2
540 - Chemistry & allied sciences
2
780 - Music
2
300 - Social sciences
1
304 - Factors affecting social behavior
1
330 - Economics
1
363 - Other social problems & services
1
410 - Linguistics
1
530 - Physics
1
576 - Genetics & evolution
1
600 - Technology
1
720 - Architecture
1
770 - Photography, photographs & computer art
1