System : an international journal of educational technology and applied linguistics  [Serials]. 

 -  New York : Paragamon Press  1989 
<br/><br/> Quarterly 
<br/><br/><label>ISBN: </label>0346-251X  0.00 
<br/><br/><label>Subjects--Personal Names: </label><br/>Language and languages -- Study and teaching -- Periodicals
<br/><br/><label>Dewey Class. No.: </label>P 51  / SYS