Orr, Robert Thomas, 1908- Vertebrate biology / [electronic resource] / Robert T. Orr.. — 4th ed.. — Philadelphia : : Saunders,, 1976.. — vii, 472 p. : : ill. ; 27 cm.

Includes bibliographical references and index.



ISBN: 0721670180 9780721670188

LCCN: 75019850

Nat. Bib. Agency Control No.: 7609747 DNLM

Subjects--Topical Terms:
Vertebrates.
Vertébrés.
Vertebrates.

LC Class. No.: QL605 / .O7 1976

Dewey Class. No.: 596

National Library of Medicine Call No.: QL 605 / O75v 1976