Classification
140 - Specific philosophical schools
330 - Economics
5
900 - History & geography
5
300 - Social sciences
4
000 - Computer science, information & general works
1
100 - Philosophy & psychology
1
200 - Religion
1
333 - Economics of land & energy
1
370 - Education
1
410 - Linguistics
1
700 - The arts; fine & decorative arts
1
770 - Photography, photographs & computer art
1
800 - Literature & rhetoric
1