Horn, Mary <br/><br/>
Children and plastics stages 1,2 and background 

 - London :  Macdonald Educational,  1974. 
 - 108p.;  ill.;  22cm 
<br/><br/><label>ISBN: </label>0356043525 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science<br/>Education
<br/><br/><label>Dewey Class. No.: </label>507.07  / HOR