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Precambrian and Paleozoic Geology and Ore Deposits in the Midcontinent Region: Rosiclare, Illinois to Ironton and Viburnum, Missouri: June 30–July 8, 1989 ,
13
IGC Field Trip T147. Precambrian and Paleozoic geology and ..:
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Precambrian and Paleozoic Geology and Ore Deposits in the Midcontinent Region: Rosiclare, Illinois to Ironton and Viburnum, Missouri: June 30–July 8, 1989 ,
14