Classification
100 - Philosophy & psychology
2
300 - Social sciences
320 - Political science
330 - Economics
2
340 - Law
370 - Education
2
600 - Technology
620 - Engineering & allied operations
900 - History & geography
2
140 - Specific philosophical schools
1
301 - Sociology & anthropology
1
380 - Commerce, communications & transportation
1
400 - Language
1
576 - Genetics & evolution
1
658 - General management
1
700 - The arts; fine & decorative arts
1
780 - Music
1