Proceedings of the Annual Meeting. American Association of Stratigraphic Palynologists Vol. 2, Geoscience and Man, Volume 3. Proceedings of the Second Annual Meeting, October 1969 (1971), pp. 83-92 ...
THE tract of Devonian rocks which stretches through the north of France and Belgium, and across Rhenish Prussia into Westphalia and Nassau, has furnished ample materials for geological disquisition.
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