Nitrogen Isotopic Composition of Shungite from the Onega Structure, Russia, and the Origin of the Organic Matter
2018 ◽
Vol 56
(13)
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pp. 1341-1353
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2003 ◽
Vol 67
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pp. 3773-3783
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2006 ◽
Vol 68
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pp. 245-258
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2016 ◽
Vol 434
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pp. 161-170
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2011 ◽
Vol 47
(4)
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pp. 489-497
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1992 ◽
Vol 110
(1-4)
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pp. 23-37
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2014 ◽
Vol 33
(12)
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pp. 40-47
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