Classification
700 - The arts; fine & decorative arts
900 - History & geography
3
333 - Economics of land & energy
2
800 - Literature & rhetoric
2
000 - Computer science, information & general works
1
170 - Ethics
1
301 - Sociology & anthropology
1
320 - Political science
1
330 - Economics
1
340 - Law
1
370 - Education
1
410 - Linguistics
1
551 - Geology, hydrology & meteorology
1
581 - Specific topics in natural history
1
600 - Technology
1
610 - Medicine & health
1
620 - Engineering & allied operations
1
630 - Agriculture & related technologies
1