Dubisch, Roy,  1917- <br/><br/>
Basic concepts of mathematics for elementary teachers / 
Roy Dubisch 
 - 2d ed. 
 - Reading, Mass. :  Addison-Wesley,  1981 
 - 546 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographies and index 
<br/><br/><label>ISBN: </label>0201031701  16.95 (est.) 
<br/><br/><label>LCCN: </label>80-19446 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--1961-<br/>Mathematics--Study and teaching (Elementary)