Conrad Haas
Conrad Haas (1509–1576) was an Austrian or Transylvanian Saxon military engineer. He was a pioneer of rocket propulsion.
Conrad Haas (1509–1576) was an Austrian or Transylvanian Saxon military engineer. He was a pioneer of rocket propulsion.
Conrad Haas (1509–1576) was an Austrian or Transylvanian Saxon military engineer. He was a pioneer of rocket propulsion.
Source: Wikipedia "Conrad Haas" · CC BY-SA 4.0
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