TY  - BOOK
AU  - Byrnes,Heidi
AU  - Canale,Michael
TI  - Defining and developing proficiency: guidelines, implementations and concepts 
SN  - 0844293857
PY  - 1987///
CY  - Lincolnwood, Ill.
PB  - National Textbook Company
KW  - American Council on the Teaching of Foreign Languages
KW  - Language and languages
KW  - Ability testing
KW  - Study and teaching
KW  - United States
N1  - Includes bibliographies and index
ER  -