American Water Works Association, ebrary, Inc, & Ingram, W. M. (2004). Problem organisms in water: Identification and treatment (3rd ed.). American Water Works Association.
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Dyfyniad Arddull Chicago
American Water Works Association, Inc ebrary, and William Marcus Ingram. Problem Organisms in Water: Identification and Treatment. 3rd ed. Denver, Colo.: American Water Works Association, 2004.
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Dyfyniad MLA
American Water Works Association, et al. Problem Organisms in Water: Identification and Treatment. 3rd ed. American Water Works Association, 2004.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.