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