TY  - BOOK
AU  - North,Brian
TI  - The development of a common framework scale of language proficiency
T2  - Theoretical studies in second language acquisition
SN  - 0820448524
AV  - P53.4. N67 2000
U1  - 418.0076 
PY  - 2000///]
CY  - New York
PB  - P. Lang
KW  - Language and languages
KW  - Ability testing
KW  - Scaling (Social sciences)
KW  - Communicative competence
N1  - Includes bibliographical references (pages 417-459)
ER  -