by United States. Animal and Plant Health Inspection Service
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Pseudorabies eradication program
United States. Congress. Senate. Committee on Agriculture, Nutrition, and Forestry. Subcommittee on Nutrition and Investigations.1991

Pseudorabies eradication
United States. Animal and Plant Health Inspection Service. Veterinary Services1989
USDA licensing of a genetically altered veterinary vaccine
United States. Congress. House. Committee on Science and Technology. Subcommittee on Investigations and Oversight.1986