(1991). Recommended design criteria manual wastewater collection and treatment facilities South Dakota department of environmental and natural resources. South Dakota: Division of Environemental Services Joe Foss Building.
Chicago-tyylinen lähdeviittausRecommended Design Criteria Manual Wastewater Collection and Treatment Facilities South Dakota Department of Environmental and Natural Resources. South Dakota: Division of Environemental Services Joe Foss Building, 1991.
MLA-viiteRecommended Design Criteria Manual Wastewater Collection and Treatment Facilities South Dakota Department of Environmental and Natural Resources. South Dakota: Division of Environemental Services Joe Foss Building, 1991.
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