Classification
330 - Economics
340 - Law
380 - Commerce, communications & transportation
600 - Technology
2
700 - The arts; fine & decorative arts
780 - Music
900 - History & geography
100 - Philosophy & psychology
1
300 - Social sciences
1
320 - Political science
1
370 - Education
1
400 - Language
1
620 - Engineering & allied operations
1
658 - General management
1
770 - Photography, photographs & computer art
1