Scrapie control in the United States: a review of the past with an emphasis on the present Flock Certification Program.
Detwiler
L A
LA
USDA/APHIS, Veterinary Services, Trenton, NJ.
D000822:Animal Husbandry / Q000379:methods; D000818:Animals; D011159:Population Surveillance; D012608:Scrapie / Q000453:epidemiology / Q000517:prevention & control*; D012756:Sheep; D014481:United States / Q000453:epidemiology