TY  - BOOK
AU  - Leaver, Betty Lou
AU  - Shekhtman, Boris
TI  - Developing professional-level language proficiency
SN  - 9780521016858
SN  - 200354474
U1  - 418.0071 LEA 
PY  - 2002///
CY  - Cambridge
PB  - Cambridge University Press
KW  - Language and languages - Study and teaching
N1  - Includes bibliographical references and indexes
ER  -