TY  - BOOK
ED  - GAS 9 (Group)
ED  - International Telecommunication Union.
ED  - International Telegraph and Telephone Consultative Committee.
TI  - Transition from analogue to digital networks: case study of a metropolitan area (Istanbul, Turkey) : case study for an ISDN network (Maracaibo, Venezuela) : case studies of rural areas (Hatton-Nawalapitiya, Sri Lanka and La Lekie, Cameroon) 
SN  - 9261019315 (pbk.)
U1  - 621.3851 20
PY  - 1983///
CY  - Geneva
PB  - International Telecommunication Union, International Telegraph and Telephone Consultative Committee
KW  - Digital communications
N1  - At head of title: GAS 9
ER  -