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4h 29min, dec 15, 1958 y - IPN

Description:

IPN inició sus transmisiones en circuito cerrado
con clases de matemáticas impartidas por el profesor Vianney Vergara,

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LINEA DEL TIEMPO (MEXICO) TV ALT.

21 Nov 2017

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Date:

4h 29min, dec 15, 1958 y

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~ 66 years ago

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