Children and plastics :  stages 1, 2 and background : a unit for teachers. 

 - [London]:   Macdonald Educational,   [1974].  
 - 108 p. :  ill. ;  24 cm. 
 - Science 5/13 .
<br/><br/>Includes index. 
<br/><br/><label>ISBN: </label>0356043525 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science--Study and teaching (Primary)
<br/><br/><label>Dewey Class. No.: </label>372.35044