Classification
320 - Political science
330 - Economics
900 - History & geography
576 - Genetics & evolution
10
300 - Social sciences
3
800 - Literature & rhetoric
3
170 - Ethics
1
200 - Religion
1
304 - Factors affecting social behavior
1
340 - Law
1
370 - Education
1
380 - Commerce, communications & transportation
1
600 - Technology
1
630 - Agriculture & related technologies
1
700 - The arts; fine & decorative arts
1