Classification
100 - Philosophy & psychology
700 - The arts; fine & decorative arts
320 - Political science
9
610 - Medicine & health
8
000 - Computer science, information & general works
7
363 - Other social problems & services
7
140 - Specific philosophical schools
6
333 - Economics of land & energy
6
370 - Education
6
170 - Ethics
5
200 - Religion
5
600 - Technology
5
900 - History & geography
5
330 - Economics
4
400 - Language
3
410 - Linguistics
3
800 - Literature & rhetoric
3
120 - Epistemology, causation & humankind
2
297 - Islam, Babism & Bahai Faith
2
301 - Sociology & anthropology
2
340 - Law
2
620 - Engineering & allied operations
2
300 - Social sciences
1
380 - Commerce, communications & transportation
1
500 - Natural sciences & mathematics
1
540 - Chemistry & allied sciences
1
551 - Geology, hydrology & meteorology
1
580 - Plants (Botany)
1
581 - Specific topics in natural history
1
658 - General management
1