UNESCO <br/><br/>
Unesco source book for science teaching /  
UNSCO 
 - Rev & enl.ed. 
 - Paris :    UNSCO,    1962 
 - 250 p. :    ill. ;    24 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Science -- Study and teaching (Elementary)
<br/><br/><label>Dewey Class. No.: </label>372.35 UNE