Classification
100 - Philosophy & psychology
200 - Religion
330 - Economics
900 - History & geography
320 - Political science
3
800 - Literature & rhetoric
3
140 - Specific philosophical schools
2
300 - Social sciences
2
000 - Computer science, information & general works
1
301 - Sociology & anthropology
1
333 - Economics of land & energy
1
370 - Education
1
410 - Linguistics
1
530 - Physics
1
600 - Technology
1
620 - Engineering & allied operations
1
700 - The arts; fine & decorative arts
1
770 - Photography, photographs & computer art
1