Telecommunication services for developing economies proceeding of the ITC specialist seminar, Krakow, Poland, 22-27 April, 1991 - ITC Specialist Seminar (1991 : Krakow, Poland); Filipiak, Janusz, 1952- (Amsterdam Elsevier North-Holland, 1991)
Keywords: Telecommunication -- Traffic -- Congresses; Telecommunication systems -- Congresses; Integrated services digital networks -- Congresses; Computer networks -- Congresses