Etherton, Alan Roy Brian. <br/><br/>
Mastering Modern English:  a certificate course / 
A.R.B. Etherton. 
 - London :  Longmans,  1966 . 
 - viii, 416 p.  22 cm. 
<br/><br/><label>ISBN: </label>058252573 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language--study and teachingforeign students
<br/><br/><label>LC Class. No.: </label>PE1128