TY - BOOK AU - Brown, J. AU - Glazier, E.V.D. TI - Telecommunications U1 - 621.39 PY - 1974/// CY - London PB - English Language Book Society and Chagman and Hall KW - Electronics KW - Amplifiers- electronics KW - Cybernetics KW - digital electronics KW - Electric conductors KW - Electronic circuits KW - Semiconductors KW - Superconductors KW - Transistors KW - Microelectronics KW - Semiconductor KW - Engineering KW - Technology ER -