Classification
600 - Technology
900 - History & geography
22
620 - Engineering & allied operations
11
700 - The arts; fine & decorative arts
10
630 - Agriculture & related technologies
8
300 - Social sciences
7
000 - Computer science, information & general works
4
370 - Education
4
100 - Philosophy & psychology
3
320 - Political science
3
330 - Economics
3
333 - Economics of land & energy
3
610 - Medicine & health
3
140 - Specific philosophical schools
2
340 - Law
2
363 - Other social problems & services
2
720 - Architecture
2
780 - Music
2
120 - Epistemology, causation & humankind
1
160 - Logic
1
301 - Sociology & anthropology
1
303 - Social processes
1
380 - Commerce, communications & transportation
1
400 - Language
1
410 - Linguistics
1
500 - Natural sciences & mathematics
1
530 - Physics
1
576 - Genetics & evolution
1
581 - Specific topics in natural history
1
770 - Photography, photographs & computer art
1
800 - Literature & rhetoric
1