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1 sett 1922 anni - 1922 רדיו השידור הראשון ברדיו של קורסים אוניברסיטאיים אוניברסיטת פן בפנסילבניה, ארה"ב

Aggiunto al nastro di tempo:

ההיסטוריה של הלמידה מרחוק

ByInbar Lam Zafrir

14 nov 2019

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0

328

Data:

1 sett 1922 anni

Adesso

~ 103 years ago

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