OPEN University of Sri Lanka <br/><br/>
Ecology level 4 ZOU 2262-zoology, block 2 

 - Nugegoda  Faculty of Natural Sciences, Open University of Sri Lanka  1996 
 - 130 p. 
<br/><br/><label>ISBN: </label>139298 
<br/><br/><label>Dewey Class. No.: </label>591.524  / OPE