Classification
576 - Genetics & evolution
600 - Technology
620 - Engineering & allied operations
000 - Computer science, information & general works
8
700 - The arts; fine & decorative arts
8
900 - History & geography
7
333 - Economics of land & energy
6
330 - Economics
5
380 - Commerce, communications & transportation
5
658 - General management
5
720 - Architecture
5
500 - Natural sciences & mathematics
3
370 - Education
2
610 - Medicine & health
2
100 - Philosophy & psychology
1
140 - Specific philosophical schools
1
300 - Social sciences
1
320 - Political science
1
363 - Other social problems & services
1
410 - Linguistics
1
530 - Physics
1
540 - Chemistry & allied sciences
1
630 - Agriculture & related technologies
1
800 - Literature & rhetoric
1