By Zenaitis Michael   Duff Sheldon   in Ozone: Science and Engineering

ISSN:0191-9512|27|5|397-407

Taylor & Francis Ltd‎(2005)‎

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By Helle Steve S   Duff Sheldon J.B.   in Journal of Environmental Engineering and Science

ISSN:1496-256X|6|2|123-129

NRC Research Press‎(2007)‎

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By Tao Wendong   Hall Ken J   Duff Sheldon J.B   in Water Environment Research

ISSN:1554-7531|78|7|671-679

Water Environment Federation‎(2006)‎

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By Liao Charles   Finnbogason Thomas W.   Duff Sheldon J.B.   in Journal of Environmental Engineering and Science

ISSN:1496-256X|7|4|327-333

NRC Research Press‎(2008)‎

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By Nguyen Anh-Long   Duff Sheldon J.B.   Sheppard John D.   in Water Environment Research

ISSN:1554-7531|72|1|75-83

Water Environment Federation‎(2000)‎

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