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Pipiringos G N George Nicholas 1918
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Pipiringos, G. N. (George Nicholas), 1918- author.
[Washington, D.C.] : United States Department of the Interior, Geological Survey, 1969.
1969
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Duncan, Donald C., 1911-1990 author.
[Washington, D.C.] : United States Department of the Interior, Geological Survey, 1974.
1974
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ElectronicResource GovDoc
Pipiringos, G. N. (George Nicholas), 1918-
[Washington D.C.] : U.S. Dept. of the Interior, Geological Survey : For sale by the Supt. of Docs., U.S. G.P.O., 1965.
1965
Rating:
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ElectronicResource GovDoc
Pipiringos, G. N. (George Nicholas), 1918-
[Washington D.C.] : U.S. Dept. of the Interior, Geological Survey : For sale by the Supt. of Docs., U.S. G.P.O., 1966.
1966
Rating:
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Segerstrom, Kenneth, 1909- author.
[Washington, D.C.] : United States Department of the Interior, Geological Survey, 1972.
1972
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Pipiringos, G. N. (George Nicholas), 1918- author.
Washington, D.C. : United States Department of the Interior, Geological Survey, 1961.
1961
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