Singleton, W. Ralph 1900- Elementary genetics / W. Ralph Singleton ; Drawings by Te-hsiu Ma. - 2d ed. - Princeton, N.J. : D. Van Nostrand Co. Inc. , c1967 - xii, 576 p. : ill. ; 24 cm. Includes bibliographies and index. Subjects--Topical Terms: Genetics. Dewey Class. No.: 576.5 / SIE 1967