TY  - BOOK
AU  - Hyltenstam,Kenneth
AU  - Obler,Loraine K.
TI  - Bilingualism across the lifespan: aspects of acquisition, maturity, and loss 
SN  - 0521359988 (pbk.)
PY  - 1989///
CY  - Cambridge
PB  - Cambridge University Press
KW  - Bilingualism
KW  - Language acquisition
N1  - Includes bibliographical references and index
ER  -