Stevens, R. A. <br/><br/>
Out-of-school science activities for young people /    
R. A. Stevens . 
 - Paris :   United  Nations Educational, Scientific and Cultural Orga nization ,   1969. 
 - 129p. ;    21 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science clubs.--Exhibitions.------<br/>Science --Exhibitions.------