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\bibitem{Calabrese_etal1994} Calabrese, J. P., Sexstone, A. J., Bhumbla, D. K., Skousen, J. G., Bissonnette, G. K., \& Sencindiver, J. C. (1994). Long-term study of constructed model wetlands for treatment of acid mine drainage. In \textit{Special Publication -- United States. Bureau of Mines, Report: BUMINES-SP-06B-94} (406). Proceedings of the International land reclamation and mine drainage conference and Third international conference on The abatement of acidic drainage; Volume 2 of 4; Mine drainage.

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