Classification
100 - Philosophy & psychology
400 - Language
900 - History & geography
4
410 - Linguistics
3
700 - The arts; fine & decorative arts
3
333 - Economics of land & energy
2
370 - Education
2
401 - Philosophy & theory
2
121 - Epistemology
1
160 - Logic
1
170 - Ethics
1
193 - Philosophy of Germany & Austria
1
302 - Social interaction
1
320 - Political science
1
330 - Economics
1
340 - Law
1
363 - Other social problems & services
1
418 - Standard usage & applied linguistics
1
500 - Natural sciences & mathematics
1
780 - Music
1
800 - Literature & rhetoric
1
830 - Literatures of Germanic languages
1