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Dyfyniad Arddull ChicagoNational Research Council (U.S.). Committee on Photochemistry and Inc ebrary. Third Report of the Committee on Photochemistry. Washington, D.C.: National Research Council, 1938.
Dyfyniad MLANational Research Council (U.S.). Committee on Photochemistry and Inc ebrary. Third Report of the Committee on Photochemistry. National Research Council, 1938.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.