June 1, 1940
1 min read
Inventions Win Wars
Suggested Developments, To Detect, Defeat Warplanes, Submarines, Humanitarian Aspects, Physical Principles Which Inventors Must Follow
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June 1, 1940
1 min read
Inventions Win Wars
Suggested Developments, To Detect, Defeat Warplanes, Submarines, Humanitarian Aspects, Physical Principles Which Inventors Must Follow