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sep 23, 1882 - Защита диссертации

Description:

Попов А.С. защитил диссертацию на тему " о принципах магнито- и динамоэлектрических машин постоянного тока".

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Биография Александра Степановича Попова

28 Nov 2017

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642

Date:

sep 23, 1882

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~ 143 years ago

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