Classification
780 - Music
60
900 - History & geography
18
301 - Sociology & anthropology
17
781 - General principles & musical forms
10
410 - Linguistics
7
306 - Culture & institutions
6
320 - Political science
5
400 - Language
4
700 - The arts; fine & decorative arts
4
300 - Social sciences
3
001 - Knowledge
2
200 - Religion
2
305 - Social groups
2
370 - Education
2
615 - Pharmacology & therapeutics
2
016 - Bibliographies of works on specific subjects
1
100 - Philosophy & psychology
1
140 - Specific philosophical schools
1
297 - Islam, Babism & Bahai Faith
1
304 - Factors affecting social behavior
1
330 - Economics
1
363 - Other social problems & services
1
417 - Dialectology & historical linguistics
1
500 - Natural sciences & mathematics
1
510 - Mathematics
1
534 - Sound & related vibrations
1
580 - Plants (Botany)
1
620 - Engineering & allied operations
1
782 - Vocal music
1
789 - (Optional number)
1
800 - Literature & rhetoric
1
821 - English poetry
1
840 - Literatures of Romance languages
1
945 - Italian Peninsula & adjacent islands
1