000			004440000a22001690004500
245			_aTelecommunication services for developing economics : proceedings
100			_aFilipiak, J., ed.
260			_aAmsterdam _bElsevier _c1991
300			_a693 p.
020			_a0-444-89322-6
080			_a621.39 _bI6
650			_aTELECOMMUNICATION
650			_aTELECOMMUNICATION SYSTEMS
650			_aCOMPUTER NETWORKS
041			_aEN
942			_cBK
999			_c61302 _d61302