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Stuttgart: Enke, 1962
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Reston, Va: U.S. Dept. of the Interior, U.S. Geological Survey, 2010
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Moskva: GEOS, 2017
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Espoo: Geological Survey of Finland, 2016
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Hannover: BGR, 2013
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Reston: USGS, 2012
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Reston: U.S. Geological Survey, october 2010
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Basel; Beijing; Wuhan; Barcelona; Belgrade: MDPI, 2020
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Berlin: DERA, 2015
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Reston: USGS, 2012
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Ottawa: Natural Resources Canada, 2015
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Geneve: International Organization for Standardization, 2024
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Geneve: International Organization for Standardization, 1983
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Geneve: International Organization for Standardization, 1983
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Geneve: International Organization for Standardization, 1981
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Geneve: International Organization for Standardization, 1988
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Geneve: International Organization for Standardization, 1986
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Geneve: International Organization for Standardization, 1986
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Geneve: International Organization for Standardization, 1986
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Geneve: International Organization for Standardization, 1981