The international cattle trade problems and control of disease.
D000822:Animal Husbandry / Q000592:standards; D000818:Animals; D002170:Canada; D002417:Cattle; D002418:Cattle Diseases / Q000453:epidemiology / Q000517:prevention & control* / Q000635:transmission; D003132:Commerce; D004196:Disease Outbreaks / Q000453:epidemiology / Q000517:prevention & control / Q000662:veterinary*; D005060:Europe; D005260:Female; D005544:Forecasting; D007391:International Cooperation; D007886:Legislation, Veterinary / Q000639:trends; D008297:Male; D006113:United Kingdom; D014481:United States