Langmuir, DonaldHenderson, Thomas2022-07-262022-07-261982http://hdl.handle.net/11124/14347Includes bibliographical references.masters thesesengCopyright of the original work is retained by the author.Aquifers -- MontanaAquifers -- WyomingGeochemistry -- MontanaGeochemistry -- WyomingGroundwater -- MontanaGroundwater -- WyomingGeochemical evolution of ground-water composition in two confined sandstone aquifer systems of the Northern Great Plains region of Wyoming and MontanaText