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Call Numbers

A call number is like a book's address; it tells you where to find a book in the library's collection. Call numbers are arranged alphabetically, and then by whole number (everything before the first period in the call number). 

The following call number ranges are where you'll find most of our books on Biology. The Library of Congress Classification Outline provides a full guide to call numbers.


Subclass QH 1-278.5 - Natural History (general)

Subclass QH 359-425 - Evolution

Subclass QH426-470 - Genetics

Subclass QH 540-549.5 - Ecology

Subclass QH 573-671 - Cytology

Subclass QK - Botany

Subclass QL - Zoology

Subclass QM - Human Anatomy

Subclass QP - Physiology

Subclass QR - Microbiology