Valentine, C.W. <br/><br/>
Psychology of early childhood  A study of mental development in the first years of life 

 - London  Methuen & Co Ltd  1950 
 - xiv, 522  Hb 
<br/><br/><label>Subjects--Facted Index Terms: </label><br/>
<br/><br/><label>Dewey Class. No.: </label>155.422