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12. Map showing contours on top of the upper Cretaceous Mowry Shale, Powder River Basin, Wyoming and Montana
13. Map showing altitude of the top of the Judith River Formation, Montana
14. Map showing total thickness of the Fox Hills-Lower Hell Creek aquifer, Montana
15. Map showing cumulative thickness of sandstone in the "Dakota Sandstone," Montana
16. Map showing cumulative thickness of sandstone in the Fox Hills-Lower Hell Creek aquifer, Montana
17. Map showing total thickness of the Lakota Formation and equivalent rocks, Montana
18. Map showing total thickness of the "Dakota Sandstone," Montana
19. Map showing cumulative thickness of sandstone in the Eagle Sandstone and Telegraph Creek Formation, Montana
20. Map showing total thickness of the Judith River Formation, Montana
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