  2001 - The Colorado River Region and John Wesley Powell [Geological Survey Professional Paper 669] (Paperback) ISBN-13: 9780898755565 ISBN-10: 0898755565 Genre: Science & Math ?  Sedimentary Structures in Dunes of the Namib Desert South West Africa [Special Paper Geological Society of America] (Paperback) ISBN-13: 9780813721880 ISBN-10: 0813721881 Genre: Science & Math ? |
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