ආතතිය 

 - Colombo :  Wijesooriya ,   2024 .  
 - 235 p . ;  22 cm  
<br/><br/><label>ISBN: </label>9789556523218 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Differential and developmental psychology
<br/><br/><label>Dewey Class. No.: </label>155.9042  / GEC