Não informado. (1958). Bulletin signaletique des telecommunications. Centre National d' Etudes des Telecommunications.
Cita Chicago Style (17a ed.)Não informado. Bulletin Signaletique Des Telecommunications. Issy-les-Moulineaux, França: Centre National d' Etudes des Telecommunications, 1958.
Cita MLA (8a ed.)Não informado. Bulletin Signaletique Des Telecommunications. Centre National d' Etudes des Telecommunications, 1958.
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