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      <marc:subfield code="a">Guidance manual for sewage treatment plant process audits.</marc:subfield>
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      <marc:subfield code="a">[Gatineau, Québec] : </marc:subfield>
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      <marc:subfield code="a">Issued by: Municipal Wastewater Effluent Section.</marc:subfield>
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      <marc:subfield code="a">"This report was prepared for the Ontario Ministry of Environment and Energy in partnership with the Water Environment Association of Ontario and Environment Canada's Great Lakes 2000 Cleanup Fund"-- P. 2 of cover.</marc:subfield>
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      <marc:subfield code="a">"This guidance manual is an information source document for agencies, municipalities, consultants, planners, organizations, and individuals responsible for the assessment, optimization, and upgrading of municipal sewage treatment plants. It focuses on technical methodologies that have been used to examine and assess full scale plants. In particular, conventional and modified activated sludge facilities have been addressed"--Introduction.</marc:subfield>
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