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Lucas County |
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Bedrock-topography map: OF 241
Drift-thickness map: OF 242
General: RP 1870; V 1, pt. 1
Middle Devonian formations: RI 78
Minerals: B 69
Oil and gas, "Big Lime" or deeper wells: OF 60
Quaternary geology: M 2; OF 292
Sand and gravel: RI 76
Shore erosion: RI 107
Tracer-sand study, Lake Erie: OFR 82-1
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