Fendel, Daniel M. <br/><br/>
Understanding the structure of elementary school mathematics / 
Daniel M. Fendel. 
 - Boston :  Allyn and Bacon,  c1987. 
 - xx, 488 p. :  ill. ;  24 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>020508821X 
<br/><br/><label>LCCN: </label>86017333 //r89 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics.
<br/><br/><label>LC Class. No.: </label>QA107  QA107  / .F46 1987  / .F46 
<br/><br/><label>Dewey Class. No.: </label>372.7