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Palaeobotany: Wealden Fern. Nature 236, 376 (1972). https://doi.org/10.1038/236376b0
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DOI: https://doi.org/10.1038/236376b0
Nature volume 236, page 376 (1972)
Palaeobotany: Wealden Fern. Nature 236, 376 (1972). https://doi.org/10.1038/236376b0
Issue Date:
DOI: https://doi.org/10.1038/236376b0