000 - Computer science, information, general works
1,027
100 - Philosophy & psychology
2,912
200 - Religion
973
300 - Social sciences
18,741
400 - Language
667
500 - Natural sciences and mathematics
1,405
600 - Technology (Applied sciences)
4,032
700 - The arts
2,754
800 - Literature (Belles-lettres) and rhetoric
4,789
900 - History & geography
3,725