Classification
100 - Philosophy & psychology
300 - Social sciences
320 - Political science
340 - Law
600 - Technology
301 - Sociology & anthropology
3
330 - Economics
3
370 - Education
3
900 - History & geography
3
140 - Specific philosophical schools
2
170 - Ethics
2
620 - Engineering & allied operations
2
700 - The arts; fine & decorative arts
2
000 - Computer science, information & general works
1
200 - Religion
1
304 - Factors affecting social behavior
1
360 - Social problems & services; associations
1
361 - Social problems & social welfare in general
1
364 - Criminology
1
380 - Commerce, communications & transportation
1
400 - Language
1
576 - Genetics & evolution
1
658 - General management
1
780 - Music
1