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1by Hack, John T. (John Tilton), 1913-1991Subjects: “...Geology Maryland Brandywine Region....”
Published 1955
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2by Hack, John T. (John Tilton), 1913-1991Subjects: “...Geology Maryland Brandywine Region....”
Published 1955
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3by Jonas, Anna I. (Anna Isabel), 1881-1974Subjects: “...Geology Maryland Frederick County Maps....”
Published 1938
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10Published 2000Subjects: “...Geology Maryland Frederick County Maps....”
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11by Crowley, William PatrickSubjects: “...Geology Maryland Baltimore County Maps....”
Published 1980
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14Published 1995Subjects: “...Geology Maryland....”
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15by Crowley, William PatrickSubjects: “...Geology Maryland Baltimore County....”
Published 1976
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16Published 1998Subjects: “...Geology Maryland Howard County Maps....”
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17by Drake, Avery Ala, 1927-Subjects: “...Geology Maryland Howard County Maps....”
Published 1998
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18by Drake, Avery Ala, 1927-Subjects: “...Geology Maryland Montgomery County Maps....”
Published 1998
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20The lithology and distribution of pre-cretaceous basement rocks beneath the Maryland coastal plain /by Hansen, Harry J.Subjects: “...Geology Maryland....”
Published 1986
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