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IPN (15 dic 1957 anni – 21 marzo 1958 anni)

Descrizione:

Transmisiones en circuito cerrado
con clases de matemáticas impartidas por el profesor Vianney Vergara,

Aggiunto al nastro di tempo:

Experiencias y Desarrollo de la Radiotelevisión de Servicio Público en América Latina: México

13 nov 2017

0

0

446

Data:

15 dic 1957 anni

21 marzo 1958 anni

~ 3 months and 6 days

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