Brueckner, Leo J. The new thinking with numbers / Leo J. Brueckner, Foster E. Grossnickle and Elda L. Merton. - Philadelphia : The John C. Winston, c 1959. - vi, 394 p. : ill. ; 24 cm. - Winston arithmetics ; . Includes index. 337 337 Subjects--Topical Terms: Arithmetic--Study and teaching. Dewey Class. No.: 510.7 / B832n