Sfier, vyapruthiya manusheeya <br/><br/>
Pragnapthiya saha manusheeya prathicharaya pilibada awama 

 - Colombo  Manusheeya Sevayathana Samooh  aya        2011 
 - vi, 393p. 
<br/><br/><label>ISBN: </label>9789551041458 
<br/><br/><label>Dewey Class. No.: </label>341.584