National Academy of Engineering & ebrary, Inc. (1996). Memorial tributes. The Academy.
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Dyfyniad Arddull Chicago
National Academy of Engineering and Inc ebrary. Memorial Tributes. Washington, D.C.: The Academy, 1996.
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Dyfyniad MLA
National Academy of Engineering and Inc ebrary. Memorial Tributes. The Academy, 1996.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.