Additional notes on Pecopteris oreopteridia Schl. et auct. and Pecopteris cyathea Schl. et auct. / Dodatky k poznání Pecopteris oreopteridia Schl. et auct. a Pecopteris cyathea Schl. et auct.

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Fossil Imprint / Acta Musei Nationalis Pragae, Series B - Historia Naturalis | 1948/4/1

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