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Author(s): Борисов В.А., Калмыков В.В., Ковальчук Я.М. и др. Под ред. Калмыкова В.В.
Publisher: Радио и связь
Year: 1990
Language: Russian
Pages: 156
Tags: Связь и телекоммуникации;Сети связи и системы коммутации;