Socio-economic survey of Sri Lanka, 1969-70,  round 1-4. Statistical table Vol.1 : 1973,  Population, labour force and housing 
 - Colombo  Department of Census and Statistics  1973 
 - xii,iv,130[xv]p.  34 cm. 
<br/><br/>PR 
<br/><br/><label>Dewey Class. No.: </label>309.15489  / S