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