Classification
304 - Factors affecting social behavior
200 - Religion
2
320 - Political science
2
340 - Law
2
900 - History & geography
2
100 - Philosophy & psychology
1
140 - Specific philosophical schools
1
300 - Social sciences
1
325 - International migration & colonization
1
333 - Economics of land & energy
1
338 - Production
1
361 - Social problems & social welfare in general
1
370 - Education
1
381 - Commerce
1
610 - Medicine & health
1
658 - General management
1
700 - The arts; fine & decorative arts
1
800 - Literature & rhetoric
1