Classification
577 - Ecology
8
515 - Analysis
5
519 - Probabilities & applied mathematics
5
570 - Life sciences; biology
5
304 - Factors affecting social behavior
2
510 - Mathematics
2
576 - Genetics & evolution
2
560 - Paleontology; paleozoology
1
578 - Natural history of organisms
1
591 - Specific topics in natural history
1
599 - Mammals
1
611 - Human anatomy, cytology & histology
1
614 - Incidence & prevention of disease
1
621 - Applied physics
1