Classification
330 - Economics
256
370 - Education
149
800 - Literature & rhetoric
103
900 - History & geography
96
700 - The arts; fine & decorative arts
66
410 - Linguistics
50
400 - Language
47
320 - Political science
45
780 - Music
36
576 - Genetics & evolution
24
363 - Other social problems & services
21
340 - Law
18
333 - Economics of land & energy
17
100 - Philosophy & psychology
11
380 - Commerce, communications & transportation
11
610 - Medicine & health
8
304 - Factors affecting social behavior
7
301 - Sociology & anthropology
6
630 - Agriculture & related technologies
6
600 - Technology
5
336 - Public finance
4
891 - East Indo-European & Celtic literatures
4
200 - Religion
3
000 - Computer science, information & general works
2
300 - Social sciences
2
414 - Phonology & phonetics
2
658 - General management
2
160 - Logic
1
306 - Culture & institutions
1
384 - Communications; telecommunication
1
398 - Folklore
1
450 - Italian, Romanian & related languages
1
972 - Middle America; Mexico
1