Classification
340 - Law
333 - Economics of land & energy
4
140 - Specific philosophical schools
3
320 - Political science
3
700 - The arts; fine & decorative arts
3
330 - Economics
2
900 - History & geography
2
000 - Computer science, information & general works
1
100 - Philosophy & psychology
1
170 - Ethics
1
200 - Religion
1
361 - Social problems & social welfare in general
1
363 - Other social problems & services
1
410 - Linguistics
1
600 - Technology
1
620 - Engineering & allied operations
1
800 - Literature & rhetoric
1