New Unesco source book for science teaching. 

 - Paris,  Unesco,  1973. 
 - 270 p.  illus., fold. col. map.  23 cm. 
<br/><br/><label>ISBN: </label>9231010581 
<br/><br/><label>LCCN: </label>74150700  
<br/><br/><label>Nat. Bib. No.: </label>F*** 
<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  / .U475N42 1973 
<br/><br/><label>Dewey Class. No.: </label>507