TY  - BOOK
AU  - Krashen,Stephen D.
TI  - Principles and practice in second language acquisition
SN  - 0080286283 
AV  - LB1139.L3  
U1  - 401.9 
PY  - 1984///
CY  - Oxford, New York
PB  - Pergamon
KW  - Language acquisition
KW  - Language and languages
KW  - Study and teaching
N1  - Includes index; Bibliography: p. 191-200
ER  -