Webber, H.D. Chemistry : a search for understanding / H.D. Webber, G.R. Bil lings, R.A. Hill. - Toronto : Holt Rinehart and Winston of Canada, 1970. - ix, 644 p. : ill. ; 25 cm. Book I Includes bibliographical references and index. ISBN: 003922403 Subjects--Topical Terms: Chemistry. Dewey Class. No.: 540