Classification
140 - Specific philosophical schools
320 - Political science
330 - Economics
610 - Medicine & health
700 - The arts; fine & decorative arts
363 - Other social problems & services
2
900 - History & geography
2
000 - Computer science, information & general works
1
200 - Religion
1
333 - Economics of land & energy
1
360 - Social problems & services; associations
1
370 - Education
1
380 - Commerce, communications & transportation
1
550 - Earth sciences
1
720 - Architecture
1