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Contact: Jennifer Fitzenberger
University of Arizona

Ramzi Touchan, University of Arizona

Caption: Ramzi Touchan of the University of Arizona's Laboratory of Tree-Ring Research teaches students techniques for taking tree-ring cores during his field work in Algeria.

Credit: Photo courtesy of R. Touchan, University of Arizona.

Usage Restrictions: This photo may be used only to illustrate a story about the research described in the release, 20th Century One of Driest in Nine Centuries for Northwest Africa.

Related news release: 20th century one of driest in 9 centuries for northwest Africa

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