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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,
Added to timeline:
LINEA DEL TIEMPO (MEXICO) TV ALT.
By
Amanda Malin
21 Nov 2017
0
0
355
Date:
4h 29min, dec 15, 1958 y
Now
~ 67 years ago
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