Bergen Catharine. <br/><br/>
Some sources of children's science information :  an investigation of soures of information and attitudes toward such sources as used or expressed by children / 
by Catharine Bergen. 
 - New York :  Bureau of publication,  1972. 
 - 71 p. ;  22 cm. 
<br/><br/>Bibliography :p.71. 
<br/><br/><label>ISBN: </label>040455881X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science--Study and teaching (Elementary).