Grossnickle, Foster Earl Discovering meanings in elementary school mathematics / Foster E. Grossnickle, Leo J. Brueckner. - 4th ed. - New York: Holt, Rinehart and Winston, 1963. - 468 p. : ill. ; 25 cm. Includes index. Subjects--Topical Terms: Mathematics--Study and teaching (Elementary) Dewey Class. No.: 372.7