Classification
100 - Philosophy & psychology
140 - Specific philosophical schools
304 - Factors affecting social behavior
320 - Political science
330 - Economics
170 - Ethics
1
300 - Social sciences
1
301 - Sociology & anthropology
1
340 - Law
1
370 - Education
1
600 - Technology
1
610 - Medicine & health
1
700 - The arts; fine & decorative arts
1
800 - Literature & rhetoric
1
900 - History & geography
1