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The Russian oil-and-gas complex: mineral and raw material security and problems of subsurface use - PDF (Russian)
Copyright (c) 2009 Пляскина Н.И.
This work is licensed under a Creative Commons Attribution 4.0 International License.
Copyright (c) 2009 Пляскина Н.И.
This work is licensed under a Creative Commons Attribution 4.0 International License.