Classification
300 - Social sciences
320 - Political science
370 - Education
900 - History & geography
100 - Philosophy & psychology
6
330 - Economics
4
600 - Technology
4
140 - Specific philosophical schools
3
301 - Sociology & anthropology
3
340 - Law
3
304 - Factors affecting social behavior
2
380 - Commerce, communications & transportation
2
620 - Engineering & allied operations
2
700 - The arts; fine & decorative arts
2
170 - Ethics
1
200 - Religion
1
333 - Economics of land & energy
1
363 - Other social problems & services
1
400 - Language
1
410 - Linguistics
1
500 - Natural sciences & mathematics
1
576 - Genetics & evolution
1
658 - General management
1
770 - Photography, photographs & computer art
1