Randall, E.B.Jr.  <br/><br/>
Interlaboratory programs for rubber: analyses no.20, April-June 1974  (Book) 

 - Washington, D.C.  National Bureau of Standards  1974 
 - 79 p.  27 cm. 
<br/><br/><label>Universal Decimal Class. No.: </label>678.01 : 678.43 RAN  / 17167