[Etiology of chronic lung diseases in the horse].
D000367:Age Factors; D000818:Animals; D002908:Chronic Disease; D005260:Female; D006734:Horse Diseases / Q000209:etiology*; D006736:Horses; D008171:Lung Diseases / Q000209:etiology / Q000662:veterinary*; D008297:Male; D012621:Seasons
Untersuchungen zur Atiologie chronischer Lungenkrankheiten des Pferdes.