TY  - BOOK
AU  - Harley,Birgit
ED  - Ontario Institute for Studies in Education.
TI  - The Development of second language proficiency
SN  - 0521384109
PY  - 1990///
CY  - Cambridge, New York
PB  - Cambridge University Press
KW  - Language and languages
KW  - Study and teaching
KW  - Congresses
KW  - Second language acquisition
KW  - Bilingualism
N1  - Papers prepared for a symposium held at the Ontario Institute for Studies in Education, November 1987; Includes bibliographical references (p. 227-240)
ER  -