Human Exploration of Space: A Review of NASA's 90-Day Study and Alternatives By Committee on Human Exploration of Space National Research Council Books / Paperback Transportation › Spaceflight Publisher: National Academy Press, January 1990 Price $19.97 Free Shipping Send to a friend Used - Good Good condition. (Space Flight, NASA) A copy that has been read but remains intact. May contain markings such as bookplates, stamps, limited notes and highlighting, or a few light stains. $19.97 1 in Stock at Warehouse Quantity Add Free Shipping to continental U.S. OR $1.00 per item discount if shipped to store.