Classification
100 - Philosophy & psychology
300 - Social sciences
380 - Commerce, communications & transportation
600 - Technology
3
900 - History & geography
320 - Political science
2
620 - Engineering & allied operations
2
200 - Religion
1
330 - Economics
1
370 - Education
1
400 - Language
1
410 - Linguistics
1
500 - Natural sciences & mathematics
1
700 - The arts; fine & decorative arts
1
780 - Music
1