Classification
140 - Specific philosophical schools
200 - Religion
610 - Medicine & health
700 - The arts; fine & decorative arts
170 - Ethics
3
330 - Economics
3
340 - Law
3
363 - Other social problems & services
3
370 - Education
3
900 - History & geography
3
100 - Philosophy & psychology
2
320 - Political science
2
333 - Economics of land & energy
2
380 - Commerce, communications & transportation
2
297 - Islam, Babism & Bahai Faith
1
300 - Social sciences
1
301 - Sociology & anthropology
1
360 - Social problems & services; associations
1
551 - Geology, hydrology & meteorology
1
600 - Technology
1
620 - Engineering & allied operations
1
720 - Architecture
1
800 - Literature & rhetoric
1