American Water Works Association, ebrary, Inc, & Ingram, W. M. (2004). Problem organisms in water: Identification and treatment (3rd ed.). American Water Works Association.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)American Water Works Association, Inc ebrary, ба William Marcus Ingram. Problem Organisms in Water: Identification and Treatment. 3rd ed. Denver, Colo.: American Water Works Association, 2004.
MLA -ийн эшлэл (9 дэх хэвлэлт)American Water Works Association, et al. Problem Organisms in Water: Identification and Treatment. 3rd ed. American Water Works Association, 2004.
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