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Background concentrations of PCDDs/PCDFs in ambient air — A comparison of toxic equivalency factor (TEF) modelsBruce E. Maisel; Gary T. Hunt · 1990
Baseline assessment of PCDDs/PCDFs in the vicinity of the Elk River, Minnesota generating stationLanny W. Reed; Gary T. Hunt; Bruce E. Maisel; Marilyn Hoyt; Dan Keefe; Philip Hackney · 1990