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1
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2by El-Shaarawi, A. H.“...Inland Waters Directorate, Canada Centre for Inland Waters,...”
Published 1978
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3Published 1984“...National Water Research Institute, Inland Waters Directorate, Canada Centre for Inland Waters,...”
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4by Neilson, Melanie A.“...Inland Waters Directorate, Ontario Region, Water Quality Branch,...”
Published 1984
Book