Brueckner, Leo J.  1890-1967. <br/><br/>
Developing mathematical understandings in the upper grades / 
[by] Leo J. Brueckner, Foster E. Grossnickle [and] John Reckzeh. 
 - Philadelphia,  Winston  1957 
 - 567 p.  illus.  22 cm. 
<br/><br/><label>LCCN: </label>57002762  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--Study and teaching (Secondary).
<br/><br/><label>LC Class. No.: </label>QA11  / .B848 
<br/><br/><label>Dewey Class. No.: </label>510  / BRD 1957