Ratnapala, Nandasena <br/><br/>
New horizons in research methodology 

 - Ratmalana  Sarvodaya Research Institute  1986 
 - [8],164 p.  Illustration 
<br/><br/><label>Subjects--Topical Terms: </label><br/>RESEARCH METHODOLOGY<br/>SOCIOLOGY
<br/><br/><label>Dewey Class. No.: </label>303  / RAT