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Original archive entry. The text, images and links below are kept as they were written.
Perminov, V G, The Difficult Road to Mars, Monographs in Aerospace History, Number 15, July 1999, NASA NP-1999-06-251-HQ.
Original archive entry. The text, images and links below are kept as they were written.
Perminov, V G, The Difficult Road to Mars, Monographs in Aerospace History, Number 15, July 1999, NASA NP-1999-06-251-HQ.