Classification
300 - Social sciences
320 - Political science
330 - Economics
3
340 - Law
380 - Commerce, communications & transportation
600 - Technology
900 - History & geography
3
400 - Language
2
620 - Engineering & allied operations
2
000 - Computer science, information & general works
1
100 - Philosophy & psychology
1
170 - Ethics
1
200 - Religion
1
301 - Sociology & anthropology
1
370 - Education
1
658 - General management
1
700 - The arts; fine & decorative arts
1
780 - Music
1