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Ferns from the Chinle formation (upper Triassic) in the Fort Wingate area, New Mexico / by Sidney R. Ash.

By: Ash, Sidney R, 1928-.
Material type: materialTypeLabelBookSeries: Geological Survey Professional Paper; 613-D.Publisher: Washington : United States Government Printing Office, 1969Description: 52 p., [2] h. de lam. --.Content type: Texto (visual) Media type: sin mediación Subject(s): Helechos fósiles | Nuevo Mexico | Paleobotánica | Triásico
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