Classification
370 - Education
500 - Natural sciences & mathematics
333 - Economics of land & energy
16
900 - History & geography
11
700 - The arts; fine & decorative arts
10
100 - Philosophy & psychology
9
620 - Engineering & allied operations
9
000 - Computer science, information & general works
7
363 - Other social problems & services
7
400 - Language
7
600 - Technology
7
320 - Political science
5
610 - Medicine & health
5
300 - Social sciences
4
780 - Music
4
380 - Commerce, communications & transportation
3
140 - Specific philosophical schools
2
410 - Linguistics
2
540 - Chemistry & allied sciences
2
657 - Accounting
2
720 - Architecture
2
120 - Epistemology, causation & humankind
1
200 - Religion
1
304 - Factors affecting social behavior
1
340 - Law
1
520 - Astronomy & allied sciences
1
530 - Physics
1
581 - Specific topics in natural history
1
658 - General management
1
800 - Literature & rhetoric
1