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1990 Update to Strategy for Exploration of the Inner Planets

National Research Council (U.S.). Committee on Planetary and Lunar ExplorationLarry W. EspositoRobert Osborne Pepin

出版	National Academy Press, 1990
URL	http://books.google.com.hk/books?id=xj0rAAAAYAAJ&hl=&source=gbs_api