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The following HTML text is provided to enhance online readability. Many aspects of typography translate only awkwardly to HTML. Please use the page image as the authoritative form to ensure accuracy. 6. National Research Council, Strategy for the Exploration of the Inner Planets: 1977-1987, National Academy of Sciences, Washington, D.C., 1978. 7. National Research Council, Update to Strategy for Exploration of the Inner Planets, National Academy Press, Washington, D.C., 1990. 8. National Research Council, International Cooperation for Mars Exploration and Sample Return, National Academy Press, Washington, D.C., 1990, pp. 1, 3, and 25. 9. National Research Council, An Integrated Strategy for the Planetary Sciences: 1995-2010, National Academy Press, Washington, D.C., 1994. 10. National Research Council, Review of NASA’s Planned Mars Program, National Academy Press, Washington, D.C., 1996, pp. 3, 26, and 29. 11. National Research Council, Assessment of Mars Science and Mission Priorities, The National Academies Press, Washington, D.C., 2001, pp. 3, 83-88, and 99-102. 12. In March, 2007, J. Douglas McCuistion, the director of NASA’s Mars Exploration Program, informed the NRC’s Committee to Assess Solar System Exploration that cost estimates for a Mars sample-return mission run the gamut from $3 billion to $10 billion, with $5 billion being most likely. Also see, National Research Council, Assessment of NASA’s Mars Architecture 2007-2016, The National Academies Press, Washington, D.C., 2006, p. 19, note 26.
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