Horrocks, John.
The Technology Guide to Telecommunications / Horrocks John, Scarr Robin. - Pirbright, Surrey : Horrocks Technology, 1994. - Ok. 1000 K kilka liczbowań; 30 cm.
The Technology Guide to Telecommunications / Horrocks John, Scarr Robin. - Pirbright, Surrey : Horrocks Technology, 1994. - Ok. 1000 K kilka liczbowań; 30 cm.