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Nairn, R. W., & Hedin, R. S. (1992). Designing wetlands for the treatment of polluted coal mine drainage. In M. C. Landin (Ed.), Wetlands; proceedings of the 13th annual conference; Society of Wetland Scientists (pp. 224–229).
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Ziemkiewicz, P. F., Skousen, J. G., Lovett, R., Skousen, J. G., & Ziemkiewicz, P. F. (1996). Open limestone channels for treating acid mine drainage; a new look at an old idea. In Acid mine drainage control and treatment. Morgantown: West Virginia University and the National Mine Land Reclamation Center.
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