Classification
360 - Social problems & services; associations
900 - History & geography
320 - Political science
5
361 - Social problems & social welfare in general
4
330 - Economics
3
140 - Specific philosophical schools
2
300 - Social sciences
2
610 - Medicine & health
2
700 - The arts; fine & decorative arts
2
100 - Philosophy & psychology
1
200 - Religion
1
304 - Factors affecting social behavior
1
333 - Economics of land & energy
1
340 - Law
1
363 - Other social problems & services
1
364 - Criminology
1
370 - Education
1
400 - Language
1
500 - Natural sciences & mathematics
1
551 - Geology, hydrology & meteorology
1
600 - Technology
1
620 - Engineering & allied operations
1