Classification
410 - Linguistics
149 - Other philosophical systems
23
400 - Language
14
414 - Phonology & phonetics
4
900 - History & geography
4
100 - Philosophy & psychology
3
370 - Education
3
160 - Logic
2
301 - Sociology & anthropology
2
380 - Commerce, communications & transportation
2
121 - Epistemology
1
401 - Philosophy & theory
1
415 - Grammar
1
491 - East Indo-European & Celtic languages
1
800 - Literature & rhetoric
1