Browsing by Author "Weidhaas, J. A. (John A.)"
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- Diseases of landscape trees : Dutch elm disease and its control in VirginiaStipes, R. Jay; Weidhaas, J. A. (John A.) (Virginia Cooperative Extension Service, 1971-01)Dutch elm disease is the most devastating and economically important shade tree disease in the United States.
- Forest pest control : a training program for the certification of pesticide applicatorsMcElwee, Robert L.; Coartney, James S.; Weidhaas, J. A. (John A.) (Virginia Polytechnic Institute and State University. Extension Division, 1979)
- Insect Notes, No. 174, March 3, 1988Weidhaas, J. A. (John A.) (Virginia Cooperative Extension Service, 1988-03-03)