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© IWA Publishing 1992
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P. Hartwig, C. F. Seyfried; The Combined Biological Nitrogen and Phosphorus Removal - Design and Large-Scale Experiences. Water Sci Technol 1 November 1992; 26 (9-11): 2241–2244. doi: https://doi.org/10.2166/wst.1992.0706
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