Allen, John
Telecommunications / John Allen. - Houndsmill, Basingstoke : Macmillan, 1990. - x, 117 p. : ill., maps (some col,) - Macmillan science 16-19 project. University of Bath .
0333476271
92015052
Telecommunication systems.
Telecommunications / John Allen. - Houndsmill, Basingstoke : Macmillan, 1990. - x, 117 p. : ill., maps (some col,) - Macmillan science 16-19 project. University of Bath .
0333476271
92015052
Telecommunication systems.