TY  - BOOK
AU  - 
AU  - Long,Michael H.
TI  - An introduction to second language acquisition research
SN  - 0582553776
U1  - 418 23
PY  - 1991///
CY  - London, New York
PB  - Longman
KW  - Second language acquisition
KW  - Research
N1  - Includes bibliographical references  and index
ER  -