Classification
400 - Language
414 - Phonology & phonetics
410 - Linguistics
20
370 - Education
3
380 - Commerce, communications & transportation
3
900 - History & geography
3
100 - Philosophy & psychology
1
300 - Social sciences
1
333 - Economics of land & energy
1
700 - The arts; fine & decorative arts
1
780 - Music
1