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Marion County |
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Aggregate resources, southwestern portion: OF 302, 303
Bedrock geology, southwestern portion: M 8
Bedrock-topography map: OF 239
Drift-thickness map: OF 240
Economic geology: RI 28
General: V 1, pt. 1
Limestone-dolomite aquifer: RI 110
Minerals: B 69
Quaternary geology: M 2; OF 295
Superconducting Super Collider Project maps
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