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Biology Research Guide: Home


Cell diagram


Biology is a branch of knowledge that deals with living organisms and vital processes. Print and electronic books offer an overall understanding of the subject. Articles from the libraries' research databases provide updated information on specific area of scientific study. Ask a librarian if you need help using these resources.
Generally, the Library of Congress classification numbers for biology will begin with the letters QH to QR. 

General Biology

Subclass QH

QH1-278.5      Natural history (General)

QH1-(199.5)         General: Including nature
                                conservation, geographical

QH201-278.5   Microscopy

QH301-705.5  Biology (General)

QH359-425            Evolution

QH426-470            Genetics

QH471-489            Reproduction

QH501-531            Life

QH540-549.5         Ecology

QH573-671            Cytology

QH705-705.5         Economic biology

Botany & Zoology

Subclass QK

QK1-989           Botany

QK1-474.5             General: Including
                                geographical distribution

QK474.8-495          Spermatophyta.  Phanerogams

QK494-494.5          Gymnosperms

QK495                   Angiosperms

QK504-(638)           Cryptogams

QK640-(707)           Plant anatomy

QK710-899             Plant physiology

QK900-989             Plant ecology

Subclass QL

QL1-991            Zoology

QL1-355                General: Including
                                   geographical distribution

QL360-599.82         Invertebrates

QL461-599.82         Insects

QL605-739.8           Chordates.  Vertebrates

QL614-639.8           Fishes

QL640-669.3           Reptiles and amphibians

QL671-699              Birds

QL700-739.8           Mammals

QL750-795              Animal behavior

QL791-795              Stories and anecdotes

QL799-799.5           Morphology

QL801-950.9            Anatomy

QL951-991               Embryology

Anatomy & Physiology

Subclass QM

QM1-695       Human anatomy

QM1-511            General

QM531-549         Regional anatomy

QM550-577.8      Human and comparative histology

QM601-695         Human embryology

Subclass QP

QP1-(981)     Physiology

QP1-345              General: Including influence
                               of the environment

QP351-495           Neurophysiology and

QP501-801           Animal biochemistry

QP(901)-(981)       Experimental


Subclass QR

QR1-502        Microbiology

QR1-74.5           General

QR75-99.5         Bacteria

QR99.6-99.8      Cyanobacteria

QR100-130        Microbial ecology

QR171              Microorganisms in the
                           animal body

QR180-189.5     Immunology

QR355-502        Virology

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