Discovering meanings in elementary school mathematics /
Grossnickle, Foster E.(Foster Earl),1896-
Brueckner, Leo J.(Leo John),1890-1967.
Reckzeh, John.
New York ; London :  Holt, Rinehart & Winston,
1968.
With selected answers.
Previous ed (B63-16836) 1963, by            Foster E.Grossnickle and Leo J.Brueckner
Includes bibliographical references and index.