Ponder, Wilson G. Swine production in temperate and tropical environments / Wilson G. Pond, J.H. Maner. - San Francicso: W.H.Freeman 1974. - viii, 646 p. : ill. ; 24 cm. - A series of books in agricultural science. . Includes bibliographical references and index. Subjects--Topical Terms: Swine Dewey Class. No.: 636.4