National Research Council (U.S.). Space Studies Board, National Academy Press (U.S.), & ebrary, Inc. (2009). Space Studies Board annual report. National Academy Press.
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Dyfyniad Arddull Chicago
National Research Council (U.S.). Space Studies Board, National Academy Press (U.S.), and Inc ebrary. Space Studies Board Annual Report. Washington, D.C.: National Academy Press, 2009.
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Dyfyniad MLA
National Research Council (U.S.). Space Studies Board, et al. Space Studies Board Annual Report. National Academy Press, 2009.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.