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    • Zebra Mussels Pose a Threat to Virginia's Waters 

      Helfrich, Louis A. (Louis Anthony), 1942-; Weigmann, Diana L.; Speenburgh, Renee M.; Neves, Richard J.; Kitchel, Lisie; Bruenderman, Sue A., 1962- (Virginia Cooperative Extension, 2005-09-01)
      Provides an brief introduction to the invasion of the zebra mussel into American waters, explains the economic consequences they pose, and discusses if Virginia will inherit the problem, what the public can do to help, the ...
    • Zoonotic Diseases of Cattle 

      Pelzer, Kevin D.; Currin, Nancy (Virginia Cooperative Extension, 2005-09-01)
      There are numerous zoonotic diseases that can be transferred from cattle to humans, that cause mild to severe symptoms. While some of the diseases are rare, it is necessary to take precautions for these diseases seriously.