Building mathematics skills / 
edited by Richard A Denholm...[et al] 
 - Lombard, Ill. :   Riverside Pub. Co.,   ©1980. 
 - 341p:  ill.  26cm. 
<br/><br/><label>ISBN: </label>8176485446 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education;Mathematics
<br/><br/><label>Universal Decimal Class. No.: </label>372.7