by Howard W. Reeves

U.S. Dept. of the Interior, U.S. Geological Survey 2010 Geological Survey professional paper 1778

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by Jane G. Ferrigno ... [et al.]

U.S. Department of the Interior, U.S. Geological Survey 2010 Geologic investigations series map / U.S. Geological Survey I-2600-I

地図資料 (地図)

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by E. Randolph McFarland ; prepared in cooperation with the Virginia Department of Environmental Quality and the Hampton Roads Planning District Commission

U.S. Dept. of the Interior, U.S. Geological Survey 2010 Geological Survey professional paper 1772

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National Coal Resource Assessment

U.S. Dept. of the Interior, U.S. Geological Survey [2009] Geological Survey professional paper 1625-F

機械可読データファイル

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by Jane G. Ferrigno ... [et al.]

U.S. Department of the Interior, U.S. Geological Survey 2009 Geologic investigations series map / U.S. Geological Survey I-2600-C

地図資料 (地図)

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by Michael N. Machette, Janet L. Slate, and Fred M. Phillips

U.S. dept. of the Interior, U.S. Geological Survey 2008 Geological Survey professional paper 1755

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by Keith B. Ketner

U.S. Dept. of the Interior, U.S. Geological Survey 2008 Geological Survey professional paper 1757

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by Charles L. Powell II ... [et al.]

U.S. Dept. of the Interior, U.S. Geological Survey 2007 Geological Survey professional paper 1740

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by Jane G. Ferrigno ... [et al.]

U.S. Department of the Interior, U.S. Geological Survey 2007 Geologic investigations series map / U.S. Geological Survey I-2600-H

地図資料 (地図)

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by Jane G. Ferrigno ... [et al.]

U.S. Department of the Interior, U.S. Geological Survey 2006 Geologic investigations series map / U.S. Geological Survey I-2600-A

地図資料 (地図)

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