Leach, Royal B.
Chemistry / by Royal B. Leach and Galen W. Ewing. Prepared under the direction of Educational Science Division, U.S. Industries, inc. - 1st ed. - Garden City, New York : Doubleday, 1966. - v, 400 p. : ill. ; 21cm. - A Tutor text .
Includes index.
65019870
Chemistry--Programmed instruction.
QD42 / .L37
540 / LET
Chemistry / by Royal B. Leach and Galen W. Ewing. Prepared under the direction of Educational Science Division, U.S. Industries, inc. - 1st ed. - Garden City, New York : Doubleday, 1966. - v, 400 p. : ill. ; 21cm. - A Tutor text .
Includes index.
65019870
Chemistry--Programmed instruction.
QD42 / .L37
540 / LET