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 SN - 0844293857 (pbk.) 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 ACTFL revised generic guidelines"--P. [1] of cover; Includes bibliographies and index ER -