Classification
576 - Genetics & evolution
4
610 - Medicine & health
3
330 - Economics
2
363 - Other social problems & services
2
540 - Chemistry & allied sciences
2
551 - Geology, hydrology & meteorology
2
612 - Human physiology
2
000 - Computer science, information & general works
1
581 - Specific topics in natural history
1
600 - Technology
1
620 - Engineering & allied operations
1
700 - The arts; fine & decorative arts
1
900 - History & geography
1