Merkel B. Groundwater geochemistry / B. Merkel, B. Planer-Friedrich, 2005 r=on-line. - Текст : электронный.
Merkel B. Groundwater geochemistry : a practical guide to modeling of natural and contaminated aquatic systems / B. Merkel, D. Nordstrom, B. Planer-Friedrich, 2008 r=on-line. - Текст : электронный.
Merkel B. Uranium in the environment : mining impact and consequences / B. Merkel, A. Hasche-Berger, 2006 r=on-line. - Текст : электронный.
Merkel B. Uranium, mining and hydrogeology / B. Merkel, A. Hasche-Berger, 2008 r=on-line. - Текст : электронный.