a BALINSKY, B. I.. \a An Introduction to Embryoloy \h Book [Text] by B. I. Balinsky - \a 3rd ed. - \a Philadelphia: \b W. B. Saunders Company, \c 1970. - \a xviii, 725p.: \b illus. \a Includes index \a Bibliography p.: 683-709 ISBN: \a 0721615171 LC Class. No.: \a QL 955 Bal / \b ML 5682