Classification
576 - Genetics & evolution
581 - Specific topics in natural history
000 - Computer science, information & general works
6
600 - Technology
6
700 - The arts; fine & decorative arts
6
330 - Economics
5
333 - Economics of land & energy
5
363 - Other social problems & services
5
380 - Commerce, communications & transportation
3
500 - Natural sciences & mathematics
3
551 - Geology, hydrology & meteorology
3
140 - Specific philosophical schools
2
300 - Social sciences
2
320 - Political science
2
370 - Education
2
630 - Agriculture & related technologies
2
100 - Philosophy & psychology
1
301 - Sociology & anthropology
1
304 - Factors affecting social behavior
1
400 - Language
1
410 - Linguistics
1
530 - Physics
1
540 - Chemistry & allied sciences
1
610 - Medicine & health
1
620 - Engineering & allied operations
1
657 - Accounting
1
800 - Literature & rhetoric
1
900 - History & geography
1