Classification
571 - Physiology & related subjects
11
590 - Animals (Zoology)
9
577 - Ecology
8
576 - Genetics & evolution
7
001 - Knowledge
6
300 - Social sciences
6
570 - Life sciences; biology
5
333 - Economics of land & energy
4
591 - Specific topics in natural history
4
592 - Invertebrates
3
612 - Human physiology
3
551 - Geology, hydrology & meteorology
2
572 - Biochemistry
2
579 - Microorganisms, fungi & algae
2
599 - Mammals
2
610 - Medicine & health
2
611 - Human anatomy, cytology & histology
2
616 - Diseases
2
004 - Data processing & computer science
1
158 - Applied psychology
1
170 - Ethics
1
330 - Economics
1
510 - Mathematics
1
580 - Plants (Botany)
1
581 - Specific topics in natural history
1
615 - Pharmacology & therapeutics
1
650 - Management & auxiliary services
1
658 - General management
1
900 - History & geography
1
910 - Geography & travel
1