හැදුම වැඩුම උගැන්ම  හා ළමයා 
= haduma waduma uganma saha Lamaya 


 -  Sri Lanka university service:   1976. 
 - 169p.  24cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Developmental Psychology<br/>Child Psychology
<br/><br/><label>Dewey Class. No.: </label>155.4  / HAD