Classification
700 - The arts; fine & decorative arts
140 - Specific philosophical schools
2
304 - Factors affecting social behavior
2
330 - Economics
2
400 - Language
2
800 - Literature & rhetoric
2
900 - History & geography
2
170 - Ethics
1
320 - Political science
1
340 - Law
1
410 - Linguistics
1
600 - Technology
1