Houk, Clifford C., 1933- Chemistry : concepts and problems / Clifford C. Houk, Richard Post - New York : John Wiley & Sons, 1977 - 370 p. ; 26 cm. - Wiley self-teaching guides . ISBN: 0471415096 LCCN: 76-48886 Subjects--Topical Terms: Chemistry--Programmed instruction