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The pre-Cambrian geology of the Spokane district, Black Hills, South Dakota
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The pre-Cambrian geology of the Spokane district, Black Hills, South Dakota

Leon Otis Wiringa
University of Iowa
Master of Science (MS), State University of Iowa
Spring 1932
DOI: 10.17077/etd.006460
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Abstract

Geology Stratigraphic Geology Precambrian Black Hills (S.D. and Wyo.)

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