Um, Paul Noumba and others <br/><br/>
A model for calculating interconnection costs in telecommunications   
Ed. by Paul Noumba Um ...et.al. 
 - Washington  World Bank  2004 
 - 1 CD 
<br/><br/> "Received with the Book" DP26932   
<br/><br/><label>ISBN: </label>0821356712 
<br/><br/><label>Dewey Class. No.: </label>CD122  / 384.64 W927.MC