Ratnapala, Nandasena <br/><br/>
සමාජ ව්ද්යා පර්යේෂණ මූලධර්ම 
= Samajavidya paryeshana muuladharma 


 - Warakapola  Ariya prakashakayo  1995 
 - 290 p. 
<br/><br/><label>ISBN: </label>9555530025 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Research methods -  social sciences
<br/><br/><label>Dewey Class. No.: </label>001.42030  / R17