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| Dr. Victor Miguel Ponce |
| PROJECT PHOTOS R |
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| View of Joe Bill Canyon, in Tecate Creek, Baja California, Mexico (March 2003). |
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| View of Joe Bill Canyon, in Tecate Creek, Baja California, Mexico (March 2003). |
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| View of Joe Bill Canyon, in Tecate Creek, Baja California, Mexico (March 2003). |
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| Dr. Julio Valdes at Joe Bill Canyon (March 2003). |
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| Closeup of sand cut at Joe Bill Canyon (March 2003). |
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| Upstream side view of railroad-crossing embankment downstream of Joe Bill Canyon (March 2003). |
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| Downstream view of railroad-crossing embankment downstream of Joe Bill Canyon (March 2003). |
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| View of Tecate Creek downstream of railroad-crossing embankment near Tecate, Baja California, Mexico (March 2003). |
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| Upstream view of Tecate Creek at the intersection with Highway 2, near Tecate, Baja California, Mexico (2003). |
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| Andreas Koch, Alfredo Angulo, and Julio Valdes on Tecate Creek, March 2003. |
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| Victor M. Ponce, Alfredo Angulo, and Julio Valdes on Tecate Creek, March 2003. |
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