inter-2014-190http://www.ipgg.sbras.ru/ru/Files/publications/ibc/inter-2014-190.pdfinter-2014-190publ-khimicheskoy-sostav-trudnoizvlekaemoy-nefti-na-territorii-2014-041661

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publ-khimicheskoy-sostav-trudnoizvlekaemoy-nefti-na-territorii-2014-041661