Classification
100 - Philosophy & psychology
340 - Law
400 - Language
320 - Political science
6
700 - The arts; fine & decorative arts
5
140 - Specific philosophical schools
4
170 - Ethics
4
333 - Economics of land & energy
4
410 - Linguistics
4
000 - Computer science, information & general works
3
370 - Education
3
780 - Music
3
900 - History & geography
3
120 - Epistemology, causation & humankind
2
200 - Religion
2
300 - Social sciences
2
330 - Economics
2
380 - Commerce, communications & transportation
2
500 - Natural sciences & mathematics
2
658 - General management
2
800 - Literature & rhetoric
2
297 - Islam, Babism & Bahai Faith
1
363 - Other social problems & services
1
530 - Physics
1
576 - Genetics & evolution
1
600 - Technology
1
620 - Engineering & allied operations
1
770 - Photography, photographs & computer art
1