Debra Elaine Dandridge, Lichens: The Challenge for Rock Art Conservation, a Ph.D. dissertation submitted to the Office of Graduate Studies, Texas A&M University.

This study investigates the effects that lichens have on rock surfaces in which ancient rock art (petrogylphs and pictographs) may be found. The work was undertaken through a cooperative agreement with the University of Houston. The dissertation can be found at  Received by NCPTT on June 11.

For more information, contact Mary Striegel.

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