Classification
100 - Philosophy & psychology
1
140 - Specific philosophical schools
300 - Social sciences
301 - Sociology & anthropology
304 - Factors affecting social behavior
1
333 - Economics of land & energy
1
370 - Education
1
380 - Commerce, communications & transportation
400 - Language
1
610 - Medicine & health
1
700 - The arts; fine & decorative arts
1