Perera, B.A.T <br/><br/>
Manawa viddya ha samaja viddya 

 - Colombo  S. Godage & Brothers  1993 
 - 127 p ., 
<br/><br/><label>ISBN: </label>9552008441 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Psychology<br/>Sociology
<br/><br/><label>Dewey Class. No.: </label>301  / PER