Preston, Ralph Clausius,  1908- <br/><br/>
Teaching social studies in the elementary school 
Ralph C. Preston 
 - rev. ed. 
 - Rinehart and Winston, New York  Holt  1966 
 - 382 p. :  ill. ;  23 cm. 
<br/><br/> includes index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social science--Study and teaching(Elementary)