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Spore-pollen complexes of Upper Permian deposits of various Regions of the North of the European part of the USSR. [ Sporovo-pyl'tsevye kompleksy verkhnepermskikh Ot-Lozheniy Nekotorykh Rayonov Severa Ebropeyskoy Chasti Sssr. ] Trudy VSEGEI.Materialy po Palinologii i Stratigrafii(Sbornik Statey)
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