CCITT General Plan for the Development of the Interregional Telecommunication Network 1987-1989-1992 /   part 2 

 - Geneva :   ITU,   1988. 
 - 318 s.;   30 cm. 
 - Management Communication-Reseaux .
 - Management Communication-Reseaux .
<br/><br/><label>ISBN: </label>9271030648