Classification
370 - Education
600 - Technology
900 - History & geography
333 - Economics of land & energy
11
620 - Engineering & allied operations
10
363 - Other social problems & services
9
700 - The arts; fine & decorative arts
9
380 - Commerce, communications & transportation
7
610 - Medicine & health
7
330 - Economics
6
000 - Computer science, information & general works
4
140 - Specific philosophical schools
4
320 - Political science
4
400 - Language
3
540 - Chemistry & allied sciences
3
720 - Architecture
3
300 - Social sciences
2
500 - Natural sciences & mathematics
2
576 - Genetics & evolution
2
658 - General management
2
100 - Philosophy & psychology
1
340 - Law
1
410 - Linguistics
1
530 - Physics
1
581 - Specific topics in natural history
1
630 - Agriculture & related technologies
1
800 - Literature & rhetoric
1