Sergeant, E S G Estimated flock-prevalence and distribution of ovine Johne's disease in Australia at December 2001. [electronic resource] - Australian veterinary journal Dec 2003 - 768-9 p. digital Publication Type: Journal Article ISSN: 0005-0423 Standard No.: 10.1111/j.1751-0813.2003.tb14612.x doi Subjects--Topical Terms: AbattoirsAnimalsAustralia--epidemiologyParatuberculosis--epidemiologyPrevalenceSheep