Plastics. 

 - 162 pages :  tables, graphics ;  27 cm 
 - Gaps in technology. .
<br/><br/><label>LCCN: </label>73457831 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plastics industry and trade
<br/><br/><label>LC Class. No.: </label>HD9661.A2  / O74 1969