Brueckner, Leo J. <br/><br/>
Discovering numbers / 
Leo J. brueckner, Elda L. Merton and Foster E. Grossnickle. 
 - Philadelphia :  Winston company,  c 1952. 
 - 346 p. :  ill. ;  20 cm. 
<br/><br/>300  300 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Arithmetic -- Study and teaching (Elementary)
<br/><br/><label>Dewey Class. No.: </label>510 / B832d