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Aachen: Lehrst. und Inst. für Mineralogie und Lagerstättenlehre der RWTH Aachen, 1992
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Ottawa: Natural Resources Canada, 1976
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Ottawa: Natural Resources Canada, 2014
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Ottawa: Natural Resources Canada, 2014
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Ottawa: Natural Resources Canada, 2013
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Ottawa: Natural Resources Canada, 2015
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Ottawa: Geological Survey of Canada, 2015
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Ottawa: Natural Resources Canada, 2013
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Ottawa, Canada: Geological Survey of Canada, 1971 ; 2015
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Ottawa: Geological Survey of Canada, 2016 04 05
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Ottawa, march 2018
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Ottawa: Geological Survey of Canada, 2015
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Ottawa: Natural Resources Canada, 2024-01-26
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Ottawa: Natural Resources Canada, 2023-02-20
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Ottawa: Natural Resources Canada, 2016
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Ottawa: Natural Resources Canada, 2021
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Ottawa: Natural Resources Canada, 2019
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Ottawa: Natural Resources Canada, 2019
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Ottawa: Natural Resources Canada, 2018
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Ottawa: Natural Resources Canada, 2018