Aoi, S. (1973). Recent trend in public telecommunications in Japan. Japan: Oki Electronic Industry.
Trích dẫn kiểu ChicagoAoi, Saburo. Recent Trend in Public Telecommunications in Japan. Japan: Oki Electronic Industry, 1973.
Deismireacht MLAAoi, Saburo. Recent Trend in Public Telecommunications in Japan. Japan: Oki Electronic Industry, 1973.
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