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According to our records Herman Potocnik might be single
Herman Potocnik wiki
Bio:
Rocket engineer and astronautics pioneer who was known for his work on long-term human habitation of space. His only book, The Problem of Space Travel - The Rocket Motor, was published in 1928 and dealt with the establishment of space stations on other planets. He served in World War I and was promoted to the position of First Lieutenant.Sponsored Links
