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By: United States. Animal and Plant Health Inspection Service. Plant Protection and Quarantine Programs. Biological Control Operations.Edition:Publication info: [Frederick, MD], U.S. Dept. of Agriculture, Animal and Plant Health Inspection Service, Plant Protection and Quarantine, Biological Control Operations, [1994]Volume: 1994Series:Holding Institution: U.S. Department of Agriculture, National Agricultural LibrarySubjects: Biological control Euphorbia esula United States WeedsBHL Collections: