Noted metallurgist and scientist Dr Richard Moldenke at work in his castle laboratory on a device to end all war by destroying the enemy ammunition with a spark from an airplane. Watchung, New Jersey: c. 1929. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library |
Taille de l’image : | 4800 px × 3803 px |
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