jstr-2012-36-2-193http://www.ipgg.sbras.ru/ru/Files/publications/ibc/jstr-2012-36-2-193.pdfjstr-2012-36-2-193publ-reference-cretaceous-spore-pollen-succession-of-west-2012-035380

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publ-reference-cretaceous-spore-pollen-succession-of-west-2012-035380