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      Hands-on: Preserving Pennsylvania’s plants

      At a conference of the Pennsylvania Association for Sustainable Agriculture, weed ecologist Dave Mortensen monitored a hands-on plant preservation workshop.

      man holding up a plant affixed to paper

      Dave Mortensen demonstrates how to preserve Pennsylvania's plants.

      Dave Mortensen, Ph.D., is professor of weed ecology and biology, dmortensen@psu.edu.

      Last Updated May 11, 2005

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