UNESCO source book for science teaching. 

 - Rev. and enl. [i.e. 2d] ed. 
 - [Paris]  Unesco  [1962] 
 - 250 p.  illus.  25 cm. 
<br/><br/><label>LCCN: </label>63001126 /L 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science--Study and teaching.<br/>Science--Experiments--Juvenile literature.
<br/><br/><label>LC Class. No.: </label>Q181  / .U473 1962