Classification
100 - Philosophy & psychology
300 - Social sciences
2
370 - Education
400 - Language
2
410 - Linguistics
2
600 - Technology
620 - Engineering & allied operations
2
630 - Agriculture & related technologies
780 - Music
2
900 - History & geography
000 - Computer science, information & general works
1
140 - Specific philosophical schools
1
301 - Sociology & anthropology
1
320 - Political science
1
330 - Economics
1
380 - Commerce, communications & transportation
1
576 - Genetics & evolution
1
700 - The arts; fine & decorative arts
1