Unesco handbook for science teachers. 

 - London :  Heinemann,   c 1980. 
 - 199 p. :  ill. ;  22 cm. 
<br/><br/> Includes index. 
<br/><br/>326  326 
<br/><br/><label>ISBN: </label>92-3-101666-0 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science--Study and teaching.
<br/><br/><label>Dewey Class. No.: </label>507 / U2