OPEN University of Sri Lanka <br/><br/>
Course of study leading to the degree of bachelor of science- level 5 PSU 3119- 

 - Nugegoda  The Open University of Colombo  1992 
 - 55 p. 
<br/><br/><label>ISBN: </label>123707 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Industrial chemistry
<br/><br/><label>Dewey Class. No.: </label>660  / OPE