Assembly of Mathematical and Physical Sciences (U.S.). Astronomy Survey Committee & ebrary, Inc. (1982). Astronomy and astrophysics for the 1980's. National Academy Press.
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Dyfyniad Arddull Chicago
Assembly of Mathematical and Physical Sciences (U.S.). Astronomy Survey Committee and Inc ebrary. Astronomy and Astrophysics for the 1980's. Washington, D.C.: National Academy Press, 1982.
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Dyfyniad MLA
Assembly of Mathematical and Physical Sciences (U.S.). Astronomy Survey Committee and Inc ebrary. Astronomy and Astrophysics for the 1980's. National Academy Press, 1982.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.