Gubkin I. Geologicheskie issledovaniya Kubanskogo neftenosnogo rayona./Gubkin I. Geological investigations of the Kuban oil-bearing area. In Russian (ask us if in doubt) - landofmagazines.com

TransliterationGubkin I. Geologicheskie issledovaniya Kubanskogo neftenosnogo rayona.

In EnglishGubkin I. Geological investigations of the Kuban oil-bearing area. In Russian (ask us if in doubt)

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