Classification
410 - Linguistics
400 - Language
19
370 - Education
5
414 - Phonology & phonetics
5
900 - History & geography
5
100 - Philosophy & psychology
4
149 - Other philosophical systems
4
380 - Commerce, communications & transportation
3
700 - The arts; fine & decorative arts
3
800 - Literature & rhetoric
3
160 - Logic
2
301 - Sociology & anthropology
2
121 - Epistemology
1
300 - Social sciences
1
304 - Factors affecting social behavior
1
333 - Economics of land & energy
1
363 - Other social problems & services
1
401 - Philosophy & theory
1
415 - Grammar
1
491 - East Indo-European & Celtic languages
1
600 - Technology
1