Cohen, Jack. Living embryos : an introduction to the study of animal development / by Jack Cohen - [2d ed., rev. and enl.] - Oxford ; New York : Pergamon Press, 1967. - x, 156 p. : ill. ; 20 cm. - The Commonwealth and International Library. Zoology division . Bibliography: p. 137-140. Subjects--Topical Terms: Embryology. Dewey Class. No.: 571.86 / COL 1967