Gerke A.A. Foraminifery permskikh, triasovykh i leyasovykh otlozheniy neftenosnykh rayonov Severa Tsentralnoy Sibiri./Gehrke A.A. Foraminifera of Permian, Triassic, and Leias deposits in the oil-bearing regions of northern Central Siberia. In Russian - landofmagazines.com

TransliterationGerke A.A. Foraminifery permskikh, triasovykh i leyasovykh otlozheniy neftenosnykh rayonov Severa Tsentralnoy Sibiri.

In EnglishGehrke A.A. Foraminifera of Permian, Triassic, and Leias deposits in the oil-bearing regions of northern Central Siberia. In Russian

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