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| 1. |
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Last Water on the Devil's Highway
Bill Broyles, Gayle Harrison Hartmann, Thomas E Sheridan, Gary Paul Nabhan, Mary Charlotte Thurtle
Häftad. University of Arizona Press, USA, 2014.
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| 2. |
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New Perspectives on the Rock Art and Prehistoric Settlement Organization of Tumamoc Hill, Tucson, Arizona
Gayle Harrison Hartmann, Peter C Boyle
Häftad. Arizona State Museum, USA, 2013.
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