Helping children understand science / 
by Kenneth Freeman... [et al.]. 
 - New York:   Holt, Rinehart and Winston,   1958.  
 - v, 314 p. :  ill. ;  22 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science--Study and teaching (Elementary)
<br/><br/><label>Dewey Class. No.: </label>372.35044