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Dyfyniad Arddull ChicagoStessel, Richard Ian. Recycling and Resource Recovery Engineering: Principles of Waste Processing. Berlin: Springer-Verlag, 1996.
Dyfyniad MLAStessel, Richard Ian. Recycling and Resource Recovery Engineering: Principles of Waste Processing. Springer-Verlag, 1996.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.