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32. Map showing altitude of the top of the Judith River Formation, Montana
33. Map showing altitude of the top of the "Dakota Sandstone," Montana
34. Map showing cumulative thickness of sandstone in the Judith River Formation, Montana
35. Map showing total thickness of the Eagle Sandstone and Telegraph Creek Formation, Montana
36. Map showing cumulative thickness of sandstone in the Lakota Formation and equivalent rocks, Montana
37. Structure contour map, upper cretaceus, southeastern Montana
38. Geothermal map, upper part of madison group, Montana
39. Index map and bibliography of ground-water studies in Montana
40. Stratigraphic correlations for Montana and adjacent areas
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