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AIzaSyAYiBZKx7MnpbEhh9jyipgxe19OcubqV5w
April 1, 2024
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171958
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14 oct 1957 año - 1957 Urgent demand for new curriculum and teaching techniques emerged after the Soviet Union launched the first satellite
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4 nov 2018
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History of Education
fecha:
14 oct 1957 año
Ahora mismo
~ 66 years ago