Computer communications Africom'84 : proceedings / ed. lit. F. Kamoun; IFIP TC 6 First African Conference on Computer Communications
Local communications systems: LAN and PBX : proceedings / ed. lit. J. P. Cabanel, G. Pujolle e A. Dantine; IFIP TC 6/WG 6.4 International In-Depht Symposium
Telephony : the location of central offices / Arthur Vaughan Abbott
Telephony : construction of underground conduits / Arthur Vaughan Abbott