Classification
400 - Language
900 - History & geography
10
700 - The arts; fine & decorative arts
8
410 - Linguistics
7
800 - Literature & rhetoric
7
140 - Specific philosophical schools
6
000 - Computer science, information & general works
5
370 - Education
5
320 - Political science
4
380 - Commerce, communications & transportation
4
363 - Other social problems & services
3
600 - Technology
3
100 - Philosophy & psychology
2
200 - Religion
2
304 - Factors affecting social behavior
2
330 - Economics
2
333 - Economics of land & energy
2
576 - Genetics & evolution
2
610 - Medicine & health
2
620 - Engineering & allied operations
2
720 - Architecture
2
780 - Music
2
300 - Social sciences
1
340 - Law
1
360 - Social problems & services; associations
1
500 - Natural sciences & mathematics
1
551 - Geology, hydrology & meteorology
1
658 - General management
1
770 - Photography, photographs & computer art
1