Cummings, Margaret. <br/><br/>
High performance / 

 - 1st ed. 
 - Oxford :  Oxford University Press,   [1991] 
 - ILL ;  24 cm. 
<br/><br/><label>ISBN: </label>9780194541923 9780194541947 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Language coursework
<br/><br/><label>Dewey Class. No.: </label>428.2