Roadside Geology of Oklahoma

Roadside Geology of Oklahoma

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"Dinosaur tracks preserved in sandstone, knobs of granite rising from the plains, and springs cascading down limestone cliffs are just a few of the fascinating

Bibliography of North American Geology

Bibliography of North American Geology

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1919/28 cumulation includes material previously issued in the 1919/20-1935/36 issues and also material not published separately for 1927/28. 1929/39 cumulation