Spencer, Peter Lincoln <br/><br/>
Building mathematical competence in the elementary school 
[by] Peter Lincoln Spencer [and] Marguerite Brydegaard. 
 - New York  Holt, Rinehart and Winston  1952. 
 - xii, 403 p.  illus.  24 cm. 
<br/><br/> Published in 1952 under title: Building mathematical concepts in the elementary school. 
<br/><br/>Includes bibliographies. 
<br/><br/><label>LCCN: </label>91010100 //r83 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Arithmetic--Study and teaching (Elementary)
<br/><br/><label>LC Class. No.: </label>QA135  / .S75 1952 
<br/><br/><label>Dewey Class. No.: </label>372.7