OPEN University of Sri Lanka <br/><br/>
Course of study leading to the degree of bachelor of science level 3 Botany PSUI 

 - Nugegoda  The Open University of Sri Lanka  0 
 - 219 p. 
<br/><br/><label>ISBN: </label>139172 
<br/><br/><label>Dewey Class. No.: </label>581.4  / OPE