Bilingualism across the lifespan :  aspects of acquisition, maturity, and loss / 
edited by Kenneth Hyltenstam and Loraine K. Obler. 
 - Cambridge :  Cambridge University Press,  1989. 
 - xi, 249 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0521359988 (pbk.)  RM76.66 
<br/><br/><label>LCCN: </label>88-031178 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Bilingualism.<br/>Language acquisition.