Classification
780 - Music
000 - Computer science, information & general works
1
100 - Philosophy & psychology
1
170 - Ethics
1
300 - Social sciences
1
320 - Political science
1
331 - Labor economics
1
363 - Other social problems & services
1
370 - Education
1
384 - Communications; telecommunication
1
500 - Natural sciences & mathematics
1
620 - Engineering & allied operations
1
700 - The arts; fine & decorative arts
1
800 - Literature & rhetoric
1
900 - History & geography
1