19000001_1050

© Fonds historique / CNRS Images

Reference

19000001_1050

Appareil à émission d'électrons photographié le 30 mars 1939. ONRSII

Appareil à émission d'électrons photographié le 30 mars 1939. Office national des recherches scientifiques et industrielles et des inventions (ONRSII).

Scientific topics

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