Bilaketaren emaitzak - "Telephone"
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Properties of subscribers' lines and their influence on telephone transmission performance.
Argitaratua 1976Liburua -
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Winning by telephone telephone effectiveness for business professionals and consumers
Argitaratua 1982Liburua -
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Coding telephone number to avoid “wrong numbers”
Argitaratua izan da Philippine Engineering Journal (1996)Artikulua -
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