[Studies of rickettsial keratoconjunctivitis of sheep].
D000818:Animals; D002031:Bulgaria; D007637:Keratoconjunctivitis / Q000453:epidemiology*; D012282:Rickettsia Infections / Q000453:epidemiology*; D012756:Sheep; D012757:Sheep Diseases / Q000453:epidemiology*
Untersuchungen über Rickettsia-Keratoconjunctivis der Schafe.