Print version: National Research Council (U.S.) Pathways to exploration : rationales and approaches for a U.S. program of human space exploration. Washington, District of Columbia : National Academies Press, c2014 xix, 258 pages ISBN 9780309305044
"Committee on Human Spaceflight Aeronautics and Space Engineering Board Space Studies Board Division on Engineering and Physical Sciences : Committee on National Statistics Division of Behavioral and Social Sciences and Education"--Cover