Classification
300 - Social sciences
398 - Folklore
301 - Sociology & anthropology
7
900 - History & geography
7
800 - Literature & rhetoric
4
400 - Language
3
200 - Religion
2
340 - Law
2
000 - Computer science, information & general works
1
100 - Philosophy & psychology
1
330 - Economics
1
333 - Economics of land & energy
1
370 - Education
1
410 - Linguistics
1
610 - Medicine & health
1