Classification
300 - Social sciences
320 - Political science
330 - Economics
630 - Agriculture & related technologies
552
900 - History & geography
300
340 - Law
245
576 - Genetics & evolution
52
700 - The arts; fine & decorative arts
31
370 - Education
15
170 - Ethics
14
100 - Philosophy & psychology
11
200 - Religion
11
800 - Literature & rhetoric
10
500 - Natural sciences & mathematics
4
140 - Specific philosophical schools
3
160 - Logic
3
301 - Sociology & anthropology
1
331 - Labor economics
1
337 - International economics
1
343 - Military, tax, trade & industrial law
1
400 - Language
1
610 - Medicine & health
1
720 - Architecture
1