Classification
576 - Genetics & evolution
610 - Medicine & health
5
700 - The arts; fine & decorative arts
4
140 - Specific philosophical schools
3
363 - Other social problems & services
3
370 - Education
3
900 - History & geography
3
000 - Computer science, information & general works
2
100 - Philosophy & psychology
2
333 - Economics of land & energy
2
600 - Technology
2
620 - Engineering & allied operations
2
200 - Religion
1
320 - Political science
1
330 - Economics
1
540 - Chemistry & allied sciences
1
580 - Plants (Botany)
1
581 - Specific topics in natural history
1