The development of second language proficiency / 
edited by Birgit Harley, Patrick Allen and Jim Cummins 
 - New York :  Cambridge University Press,  c1990. 
 - xiv, 248 p. ;  ill. ;  25 cm. 
 - The Cambridge applied lilnguistics series. .
<br/><br/><label>ISBN: </label>0521387957 
<br/><br/><label>LCCN: </label>
<br/><br/><label>Subjects--Topical Terms: </label><br/>Language and languages<br/>Study and teac Second language acquisition-Congresses Bilingualism-in education
<br/><br/><label>LC Class. No.: </label>P51  / .D48 1990