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23 sept. 1882 - Защита диссертации

Description:

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

Ajouté au bande de temps:

Биография Александра Степановича Попова

28 nov. 2017

0

0

623

Date:

23 sept. 1882

Maintenaint

~ Il y a 143 ans

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