Dilley, C. <br/><br/>
Heath elementary mathematics 

 - Lexington  D.C. Heath and Company  1972 
 - 316p.  24cm. 
<br/><br/><label>ISBN: </label>066959739 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Arithmetic
<br/><br/><label>LC Class. No.: </label>IDS QA107.D5