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dec 15, 1957 - El IPN inició sus transmisiones en circuito cerrado con clases de matemáticas impartidas por el profesor Vianney Vergara.
Added to timeline:
Televisión en México
By
Flor RG
21 Nov 2017
0
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407
Date:
dec 15, 1957
Now
~ 68 years ago
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