Map of mineral resources, Prince Georges County, Maryland
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Miscellaneous Field Studies Map↗
Geology topics
J.T. Hack
Publications and source records attributed to J.T. Hack.
Map of construction conditions, Prince Georges County, Maryland
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Miscellaneous Field Studies Map↗
Interpretation of Cumberland Escarpment and Highland Rim, south-central Tennessee and northeast Alabama
No abstract available.
Alabama, Tennessee↗
Intrenched meanders of the North Fork of the Shenandoah River, Virginia
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Professional Paper↗
Geology of the Brandywine area and origin of the upland of southern Maryland
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Professional Paper↗