Esmay, Merle L., 1920- Principles of animal environment / Merle L. Esmay. - Textbook ed. - Westport, Conn. : Avi Pub. Co., c1978. - ix, 358 p. : ill. (2 fold. in pocket) ; 24 cm. Includes bibliographies and index. ISBN: 0870552635 : Subjects--Topical Terms: Livestock--Housing.Livestock--Ecology.Veterinary physiology. LC Class. No.: SF 91