Hirschi, L. Edwin <br/><br/>
Building mathematics concepts in grades kindergarten through eight 
[by] L. Edwin Hirschi. 
 - Scranton, Pa.  International Textbook Co.  [1970] 
 - xiii, 281 p.  illus.  24 cm. 
 - The International series in elementary education .
<br/><br/><label>ISBN: </label>0700221964 
<br/><br/><label>LCCN: </label>71105079  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--Study and teaching (Elementary)
<br/><br/><label>LC Class. No.: </label>QA135.5  / .H57 
<br/><br/><label>Dewey Class. No.: </label>372.7