572 - Biochemistry 8,458
571 - Physiology & related subjects 6,880
574 - [Unassigned] 6,610
576 - Genetics and evolution 5,337
577 - Ecology 5,271
579 - Microorganisms, fungi & algae 3,442
570 - Biology 2,552
575 - Specific parts of & systems in plants 1,807
578 - Natural history of organisms 1,100
573 - Specific physiological systems in animals 806
631 - Techniques, equipment & materials 3
540 - Chemistry and allied sciences 2
000 - Computer science, information, general works 1
333 - Economics of land and energy 1
501 - Philosophy and theory 1
519 - Probabilities and applied mathematics 1
589 - [Unassigned] 1
612 - Human physiology 1
620 - Engineering and allied operations 1