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Geologic map of the northern part of the Rectortown quadrangle, Virginia [microform] / U.S. Department of the Interior, U.S. Geological Survey ; by Gerhard W. Leo ; commonwealth of Virginia, Division of Mineral Resources.
- Cartographic
- Reston, Va. : The Survey ; [Denver, Colo. : Books and Open-File Reports Section, distributor], 1991.
- 1990
Geologic map of the Loudoun County portion of the Middleburg quadrangle, Virginia [microform] / U.S. Department of the Interior, U.S. Geological Survey ; prepared in cooperation with Loudoun County Department of Natural Resources ; by Stephen W. Kline, Peter T. Lytle, and Albert J. Froelich.
- Cartographic
- [Reston, VA : The Survey ; Denver, Colo. : USGS Information Services], 1990.
- 1990
Geology of the Upperville 7.5-minute quadrangle, Fauquier and Loudoun counties, Virginia [microform] / U.S. Department of the Interior, U.S. Geological Survey ; by Arthur E. Nelson.
- Cartographic
- [Reston, Va.?] : The Survey, 1997.
- 1997
Geologic map of the Round Hill quadrangle, Clarke and Loudoun counties, Virginia, and Jefferson County, West Virginia / U.S. Department of the Interior, U.S. Geological Survey ; by Robert C. McDowell and Daniel J. Milton.
- Cartographic
- 1992
- 1 Item
Item details Format Call Number Item Location Cartographic Map Off-site Geologic map of the Bluemont quadrangle, Loudoun and Clarke counties, Virginia / U.S. Department of the Interior, U.S. Geological Survey ; by Scott Southworth ; prepared in cooperation with the Loudoun County Department of Environmental Resources.
- Cartographic
- 1994
- 1 Item
Item details Format Call Number Item Location Cartographic Map Off-site Geologic map of the Purcellville quadrangle, Loudoun County, Virginia / U.S. Department of the Interior, U.S. Geological Survey ; by Scott Southworth ; prepared in cooperation with the Loudoun County Department of Environmental Resources.
- Cartographic
- 1995
- 1 Item
Item details Format Call Number Item Location Cartographic Map Off-site Geologic map of the Loudoun County, Virginia, part of the Harpers Ferry quadrangle / Department of the Interior, U.S. Geological Survey ; by C. Scott Southworth ; prepared in cooperation with the Loudoun County Department of Environmental Resources.
- Cartographic
- 1991
- 1 Item
Item details Format Call Number Item Location Cartographic Map Off-site
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