Classification
000 - Computer science, information & general works
4
410 - Linguistics
4
700 - The arts; fine & decorative arts
4
900 - History & geography
4
330 - Economics
3
333 - Economics of land & energy
3
100 - Philosophy & psychology
2
300 - Social sciences
2
320 - Political science
2
400 - Language
2
600 - Technology
2
620 - Engineering & allied operations
2
140 - Specific philosophical schools
1
200 - Religion
1
260 - Social & ecclesiastical theology
1
500 - Natural sciences & mathematics
1
550 - Earth sciences
1
820 - English & Old English literatures
1