Network  : student's book 
/ John Eastwood, Valerie Kay, Ranald Mackin, Peter Stevens 
. - London  : Oxford University Press, 1980
. - 3 vol.  ; 25 cm. 
<br/><br/> V.1: 176 p.    V.3: 200 p.  
<br/><br/><label>ISBN: </label>0194570517 ( vol.1) 0194570568 (Vol.2) 0194570614 ( vol.3) 
<br/><br/><label>Source: </label> Don britanique 
<br/><br/><label>Universal Decimal Class. No.: </label>802.0