Brueckner, Leo J.
Discovering numbers / Leo J. brueckner, Elda L. Merton and Foster E. Grossnickle. - Philadelphia : Winston company, c 1952. - 346 p. : ill. ; 20 cm.
300 300
Arithmetic -- Study and teaching (Elementary)
510 / B832d
Discovering numbers / Leo J. brueckner, Elda L. Merton and Foster E. Grossnickle. - Philadelphia : Winston company, c 1952. - 346 p. : ill. ; 20 cm.
300 300
Arithmetic -- Study and teaching (Elementary)
510 / B832d