Classification
100 - Philosophy & psychology
170 - Ethics
200 - Religion
320 - Political science
340 - Law
140 - Specific philosophical schools
1
333 - Economics of land & energy
1
363 - Other social problems & services
1
400 - Language
1
410 - Linguistics
1
581 - Specific topics in natural history
1
700 - The arts; fine & decorative arts
1
800 - Literature & rhetoric
1