Rai Vinay Kumar <br/><br/>
Vekasik manovigyan 

 - Varanasi, India  Nand Kishor and Sons   1963 
 - 213p. 
<br/><br/><label>Source: </label>Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Developmental Psychology