Classification
320 - Political science
2
330 - Economics
333 - Economics of land & energy
2
370 - Education
610 - Medicine & health
900 - History & geography
140 - Specific philosophical schools
1
200 - Religion
1
360 - Social problems & services; associations
1
363 - Other social problems & services
1
600 - Technology
1
620 - Engineering & allied operations
1
700 - The arts; fine & decorative arts
1