[Occurrence of progressive interstitial pneumonia (maedi) of sheep in Northern Germany].
D000818:Animals; D005860:Germany, West; D011658:Pulmonary Fibrosis / Q000473:pathology / Q000662:veterinary*; D012756:Sheep; D012757:Sheep Diseases / Q000453:epidemiology*
Zum Auftreten der Progressiven Interstitiellen Pneumonie (Maedi) des Schafes in Norddeutschland.