Sri Lanka journal of population studies Vol. 18-19,  (2018) 

 - Colombo:  Population association of Sri Lanka,  2018. 
 - 152 p. 
<br/><br/><label>ISSN: </label>13913433 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Population
<br/><br/><label>Dewey Class. No.: </label>304.605  / SRI