QH (Natural History & General Biology) QH359-425 (Evolution ) QH426-470 (Genetics) QH471-489 (Reproduction) QH501-531 (Life) QH540-549.5 (Ecology) QH573-671 (Cytology) QH705-705.5 (Economic biology) QL (Zoology) QR (Microbiology)
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