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