Classification
100 - Philosophy & psychology
140 - Specific philosophical schools
1
300 - Social sciences
2
320 - Political science
2
330 - Economics
340 - Law
1
370 - Education
2
380 - Commerce, communications & transportation
400 - Language
2
410 - Linguistics
1
600 - Technology
620 - Engineering & allied operations
3
630 - Agriculture & related technologies
1
658 - General management
1
700 - The arts; fine & decorative arts
780 - Music
2
900 - History & geography