OPEN University of Sri Lanka Kularatne, K.W.S. <br/><br/>
Course of study leading to the degree of bachelor of science level 5 PSU 3122: pymers / 
by K.W.S.Kularatne; edited by S.Abeysinghe 
 - Nugegoda  The Open University of Sri Lanka  1991 
 - 44 p. 
<br/><br/><label>ISBN: </label>9552302196 
<br/><br/><label>Dewey Class. No.: </label>547.84  / OPE