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1. Cedar Valley Formation (Devonian) of Minnesota and northern Iowa, RI-18, Plate 1

1978. Mossler, John H. Geologic diagram, Cedar Valley Formation, southern Minnesota, scale 1 inch = 3 miles.

2. Cedar Valley Formation (Devonian) of Minnesota and northern Iowa, RI-18, Plate 2

1978. Mossler, John H. Geologic diagrams, Cedar Valley Formation, southern Minnesota and adjacent northern Iowa, scale 1 inch = 3 miles.