(2001). Basic science and technology statistics. OECD.
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Dyfyniad Arddull Chicago
Basic Science and Technology Statistics. Paris, Cedex, France: OECD, 2001.
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Dyfyniad MLA
Basic Science and Technology Statistics. OECD, 2001.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.