Manned spacecraft to Mars and Venus, how they work /Author: Hendrickson, Walter B.
Publisher: New York : Putnam,
Date: [1975] This title can be found in 2 Iowa libraries.
Space flight : crossing the last frontierAuthor: Richie, Jason, 1966-
Publisher: Minneapolis, MN Oliver Press
Date: c2002 This title can be found in 1 Iowa libraries.
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