TY  - BOOK
ED  - International Telecommunication Union
TI  - Red book.Vol. 3. Fascicule. 2. International analogue carrier systems. :transmission media- characteristics. recommendations G211- G652. VIIIth planetary assembly, Melaga, Toremolions, 8-19 October 1984
U1  - 621.39 I. T. U. 
PY  - 1985///
PB  - International Telecommunication Union
KW  - Computer
ER  -