Brown, Roger <br/><br/>
A first language :  the early stages / 
Roger Brown. 
 - Cambridge, MA  :  Harvard University Press,   1975. 
 - xx, 437 p., 1 l. ill. 
<br/><br/>Bibliography: p. 415-422. 
<br/><br/><label>ISBN: </label>0674303253  9780674303256 
<br/><br/><label>Subjects--Index Terms: </label>ენათმეცნიერება 
<br/><br/><label>Universal Decimal Class. No.: </label>81