TY  - BOOK
AU  - Ingram, David
TI  - First language acquisition : method, description, and explanation
SN  - 9780521349161
SN  - 88016215
U1  - 401.9 ING 
PY  - 1989///
CY  - Cambridge
PB  - Cambridge University Press
KW  - Language acquisition
N1  - Includes indexes. Bibliography: p. 519-548
ER  -