| http://www.w3.org/ns/prov#value | - Andrea Dietrich, professor of civil and environmental engineering at Virginia Tech, and her colleagues, Susan Mirlohi, of Christiansburg, Va., a Ph.D. student in environmental engineering, and Susan Duncan, professor of food science and technology, point out that the perception of a metallic flavor in water can help people limit exposure to metals such as iron, which occurs naturally in water or f
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