Feb 3 1929
From The Space Library
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(New page: Max Valier sends a rocket propelled sled across a lake in Germany. He repeated the experiment six days later. Both sleds were unmanned and the maximum speed was 395 kph.)
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Max Valier sends a rocket propelled sled across a lake in Germany. He repeated the experiment six days later. Both sleds were unmanned and the maximum speed was 395 kph.
