TY  - BOOK
A2  - by J. A. van Ek., L. G. Alexander ; in association with M. A. Fitzpatrick.
A3  - Alexander, L. G.
A3  - Fitzpatrick, M. A.
AU  - Ek, Jan Ate van
KW  - Język angielski studia i nauczanie.
NV  - 110 s. ;
PY  - 1977
TI  - Systems development in adult language learning : Waystage : an intermediary objective below Thresold-Level in a European unit/credit system for modern language learning by adults /
ER  -