Richards, Jack C. <br/><br/>
Error analysis  perspectives on second language acquisition 
/ by Jack C.  Richards 
 - New york:  Longman,  1974. 
 - x, 228p. 
<br/><br/><label>ISBN: </label>0582550440 
<br/><br/><label>Dewey Class. No.: </label>420  / RIC/E