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Borchardt, Mark A., Joel P. Stokdyk, Burney A. Kieke, Maureen A. Muldoon, Susan K. Spencer, Aaron D. Firnstahl, Davina E. Bonness, Randall J. Hunt, and Tucker R. Burch. "Sources and Risk Factors for Nitrate and Microbial Contamination of Private Household Wells in the Fractured Dolomite Aquifer of Northeastern Wisconsin." Environ Health Perspect 2021.

Borchardt, Mark A., et al. "Sources and Risk Factors for Nitrate and Microbial Contamination of Private Household Wells in the Fractured Dolomite Aquifer of Northeastern Wisconsin." Environ Health Perspect 2021.