Classification
000 - Computer science, information & general works
300 - Social sciences
330 - Economics
900 - History & geography
320 - Political science
10
333 - Economics of land & energy
6
380 - Commerce, communications & transportation
6
700 - The arts; fine & decorative arts
6
600 - Technology
5
620 - Engineering & allied operations
5
363 - Other social problems & services
4
410 - Linguistics
4
100 - Philosophy & psychology
3
400 - Language
3
630 - Agriculture & related technologies
3
800 - Literature & rhetoric
3
140 - Specific philosophical schools
2
301 - Sociology & anthropology
2
340 - Law
2
370 - Education
2
780 - Music
2
120 - Epistemology, causation & humankind
1
170 - Ethics
1
200 - Religion
1
304 - Factors affecting social behavior
1
530 - Physics
1
581 - Specific topics in natural history
1
610 - Medicine & health
1
720 - Architecture
1
770 - Photography, photographs & computer art
1