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Dyfyniad Arddull ChicagoBhatia, S.C. Solid and Hazardous Waste Management. New Delhi: Atlantic Publishers, 2007.
Dyfyniad MLABhatia, S.C. Solid and Hazardous Waste Management. Atlantic Publishers, 2007.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.