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Systematic Problems of Pollen Organs of the Genus Permotheca Zalessky from the Permian of Subangara

Crossref DOI link: https://doi.org/10.1134/S0031030121060058

Published Online: 2021-12-10

Published Print: 2021-11

Update policy: https://doi.org/10.1007/springer_crossmark_policy

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