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Ruppel, E. T. Precambrian Y sedimentary rocks in east-central Idaho.
Ruppel, E. T., Reuben, J. R., Jr., and Schleicher, D. Precambrian Z and Lower Ordovician rocks in east-central Idaho.
Ruppel, E. T., Reuben, J. R., Jr., and Schleicher, D. Precambrian Z and Lower Ordovician rocks in east-central Idaho.