TY  - BOOK
AU  - EK Van J. A
TI  - The Threshold level for modern language learning in school / 
SN  - 0582557003
U1  - 407 22
PY  - 1977///
CY  - Netherland
PB  - Longman
KW  - Language learning
N1  - Contents
; include bibliography
ER  -