1.
図書 |
supported by FUB-Fondazione "Ugo Bordoni", ISPT-Istituto Superiore Poste e Telecomunicazioni
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2.
図書 |
supported by RIA-The Royal Irish Academy, IEI-The Institution of Engineers of Ireland, IEE-The Institution of Electrical Engineers(Irish Branch)
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3.
図書 |
supported by Nachrichtentechnische Gesellschaft im VDE ... [et al.] ; [H. J. Schmitt, editor]
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