TY - BOOK AU - Byrnes, Heidi. AU - Canale,Michael ED - American Council on the Teaching of Foreign Languages. TI - Defining and developing proficiency: guidelines, implementations, and concepts T2 - The ACTFL foreign languages education series SN - 0844293857 (pbk.) AV - P53.4 .D4 1987 U1 - 418.0076 19 PY - 1987/// CY - Lincolnwood, Ill., U.S.A. PB - National Textbook Co. 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 -