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23 sett 1882 anni - Защита диссертации

Descrizione:

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

Aggiunto al nastro di tempo:

Биография Александра Степановича Попова

28 nov 2017

0

0

621

Data:

23 sett 1882 anni

Adesso

~ 143 years ago

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