Walker, O.J.  <br/><br/>
Plastics / 
O.J. Walker. 
 - London :  Longmans,  c 1967. 
 - 32 p. :  ill. 
 - Chemistry background book .
<br/><br/><label>ISBN: </label>140823166 
<br/><br/><label>Dewey Class. No.: </label>547.843