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Dyfyniad Arddull ChicagoSchwartz, A.Truman. Chemistry in Context: Applying Chemistry to Society. 2nd.ed. Dubuque: Wm.C.Brown, 1997.
Dyfyniad MLASchwartz, A.Truman. Chemistry in Context: Applying Chemistry to Society. 2nd.ed. Wm.C.Brown, 1997.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.