TY  - BOOK
AU  - Richards,Jack C.
AU  - Richards,Jack C
TI  - Error analysis: perspectives on second language acquisition 
SN  - 0582550440
U1  - 401.93 22
PY  - 1974///]
CY  - London
PB  - Longman
KW  - Language and languages
KW  - Study and teaching
N1  - Bibliography: p.216-228
ER  -