Amateur radio
Judd, F. C.
Amateur radio F. C. Judd - London Butterworth-Heinemann 1980 - 109p. biblio; figs; index - Questions and Answers .
0-408-00439-8
Radio - Amateurs'manuals
621.396 / JUD
Amateur radio F. C. Judd - London Butterworth-Heinemann 1980 - 109p. biblio; figs; index - Questions and Answers .
0-408-00439-8
Radio - Amateurs'manuals
621.396 / JUD