title: A contribution to the pathogenesis of respiratory infections of complex aetiology in calves.
mesh_terms: D000818:Animals; D002417:Cattle; D002418:Cattle Diseases / Q000209:etiology* / Q000382:microbiology; D003604:Czechoslovakia; D007242:Herpesvirus 1, Bovine / Q000472:pathogenicity; D007241:Infectious Bovine Rhinotracheitis / Q000382:microbiology; D018184:Paramyxoviridae Infections / Q000382:microbiology / Q000662:veterinary; D012141:Respiratory Tract Infections / Q000209:etiology / Q000662:veterinary*; D018108:Respirovirus / Q000472:pathogenicity