Proficiency in English through life in English speaking countries / 
National Council of Teachers of Englishedited by William R. Slager and Russel B. Nye 
 - New York :  McGraw-Hill,  c1967. 
 - xii, 154 p. ;  ill. ;  24 cm. 
<br/><br/><label>ISBN: </label>9780071135245 
<br/><br/><label>LCCN: </label>
<br/><br/><label>Subjects--Topical Terms: </label><br/>English proficiency
<br/><br/><label>LC Class. No.: </label>PE1128  / .A2P73 1967