Sankaran Unni, K <br/><br/>
Paristhiti vijinanathinte moolatathuangal (m) / 
Sankaran Unni, K 
 -  State Institute of Languages, TVPM,  1974 
 - p. ;  22 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology; Biodiversity; Conservation
<br/><br/><label>Dewey Class. No.: </label>577 SAN-P