[conference on the occasion of the tenth anniversary of American Water Resources Association] ; edited by Sandor C. Csallany, Zubair A. Saleem, Wyndham J. Roberts
Committee on Hardrock Mining on Federal Lands, Committee on Earth Resources, Board on Earth Sciences and Resources, Commission on Geosciences, Environment, and Resources, National Research Council
by Stephanie Dunkle Shapiro ... [and others] ; prepared in cooperation with the U.S. Environmental Protection Agency, Office of Ground Water & Drinking Water
by Michael J. Focazio ... [and others] ; prepared in cooperation with the U.S. Environmental Protection Agency, Office of Ground Water and Drinking Water