Coupe, Judith and Goldbart, Juliet <br/><br/>
Communication before speech  Normal development and impaired communication 

 - Croom helm, London  1988 
 - 129 
<br/><br/><label>ISBN: </label>0-7099-4848-4 
<br/><br/><label>Dewey Class. No.: </label>155.413 Cou/Gol