Chemistry of the non-metallic elements / E. Sherwin and G. J. Weston. Sherwin, Ernest. Weston, Gordon John, joint author. Chemistry, Inorganic. QD161 .S52 1966 546.7 SHC Includes bibliographical references and index. Oxford ; New York : Pergamon Press, 1966. 1966. 1966 Text ix, 190 p. : eng The commonwealth and international library. Intermediate chemistry division