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\bibitem{Emerick_etal1994} Emerick, J. C., Wildeman, T. R., Cohen, R. R., \& Klusman, R. W. (1994). \textit{Constructed wetland treatment of acid mine discharge at Idaho Springs, Colorado Guidebook on the geology, history, and surface-water contamination and remediation in the area from Denver to Idaho Springs, Colorado}  (R. C. Severson, Ed.) (Vol. C 1097).

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