Brueckner, Leo J. 1890-1967.
How to make arithmetic meaningful / Leo J. Brueckner and Foster E. Grossnickle. - Philadelphia ; Chicago : The John C. Winston Company, [1947]. - v, 513 p. : ill., diagrs. ; 22 cm.
Includes bibliographical references and index.
47002003
Arithmetic--Study and teaching.
QA135 / .B888
511.2 / BRH
How to make arithmetic meaningful / Leo J. Brueckner and Foster E. Grossnickle. - Philadelphia ; Chicago : The John C. Winston Company, [1947]. - v, 513 p. : ill., diagrs. ; 22 cm.
Includes bibliographical references and index.
47002003
Arithmetic--Study and teaching.
QA135 / .B888
511.2 / BRH