Classification
000 - Computer science, information & general works
100 - Philosophy & psychology
370 - Education
780 - Music
330 - Economics
2
380 - Commerce, communications & transportation
2
400 - Language
2
600 - Technology
2
300 - Social sciences
1
320 - Political science
1
410 - Linguistics
1
610 - Medicine & health
1
620 - Engineering & allied operations
1
630 - Agriculture & related technologies
1
700 - The arts; fine & decorative arts
1
900 - History & geography
1