OPEN University of Sri Lanka <br/><br/>
Course of study leading to the degree of bachelor of scienc level 5-botany PSU 3 

 - Nugegoda  The OpenUniversity of Sri Lanka  1991 
 - 82 p. 
<br/><br/><label>ISBN: </label>139204 
<br/><br/><label>Dewey Class. No.: </label>581.2  / OPE