420 4 <br/>
I-69 
                  Interactions: 2   Grammar /P.K.Werner., J.P.Nelson., K.Hyzer [ et al.]. 

 - 4th. 
 - USA.:  McGraw-Hill,  2002. 
 - 397p. -
<br/><br/><br/>english 
<br/><br/>                 <label>ISBN: </label>9780072331042 
<br/><br/>                 <label>Түлхүүр үг: </label>english grammar,