Defining and developing proficiency :  guidelines, implementations and concepts / 
edited by Heidi Byrnes and Michael Canale 
 - Lincolnwood, Ill. :  National Textbook Company,  1987 
 - 137 p. :  ill. ;  23 cm. 
 - The ACTEL foreign education series .
<br/><br/>Includes bibliographies and index 
<br/><br/><label>ISBN: </label>0844293857 
<br/><br/><label>LCCN: </label>86-217299 
<br/><br/><label>Subjects--Corporate Names: </label><br/>American Council on the Teaching of Foreign Languages
<br/><br/><label>Subjects--Topical Terms: </label><br/>Language and languages--Ability testing<br/>Language and languages--Study and teaching--United States