Alexander,L.G. <br/><br/>
Mainline  : a functional national approach; progress a; teacher's book 
 new ed. 
/ L.G. alexander 
. - London  : Longman, c1981
. - 139 p.  ; 22 cm. 
<br/><br/>index 
<br/><br/><label>ISBN: </label>0582515304 
<br/><br/><label>Source: </label> Don britannique 
<br/><br/><label>Universal Decimal Class. No.: </label>802.0.