Ryles, A.P. Essential of Organic chemistry= Organic chemistry: for students of the life sciences A.P. Ryles, K. Smith and R.S. Ward. - New York John wiley and sons 1980 - xiv, 306p. 24cm. ISBN: 471275824 Subjects--Topical Terms: Chemistry, organic. Dewey Class. No.: 547 / R99E22