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Precambrian geology of the needle mountains, Southwestern Colorado / by Fred Barker.

By: Barker, Fred.
Material type: materialTypeLabelBookSeries: Geological Survey Professional Paper; 644-A.Publisher: Washington : United States Government Printing Office, 1969Description: 33 p. --.Content type: Texto (visual) Media type: sin mediación Subject(s): Colorado | Precámbrico | Rocas ígneas
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