Kramer, Klaas, 1916- <br/><br/>
The teaching of elementary school mathematics/ 
by Klaas Kramer 
 - Boston :  Allyn and Bacon,   1966. 
 - x, 432p. 
<br/><br/> First published 1966. 
<br/><br/>Includes bibliographies. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics -- Study and teaching (Elementary)
<br/><br/><label>LC Class. No.: </label>QA 135.5 KRA 1966