PRRS seroprevalence on U.S. swine operations
Series: APHIS Veterinary Services info sheet; APHIS Veterinary Services info sheet
Publisher: U.S. Dept. of Agriculture, Animal and Plant Health Inspection Service, Veterinary Services, Centers for Epidemiology and Animal Health
Published: 2009
Place of publication: Fort Collins, CO
Language: eng
Subjects: Swine; Virus diseases; Porcine reproductive and respiratory syndrome
Notes: Caption title.

"January 2009."

Includes bibliographical references (p. [2]).