title: Influence of a penicillin-streptomycin preparation on lamb mortality.
mesh_terms: D000818:Animals; D000831:Animals, Newborn; D005260:Female; D010406:Penicillins / Q000627:therapeutic use*; D011024:Pneumonia, Viral / Q000517:prevention & control / Q000662:veterinary*; D011247:Pregnancy; D012756:Sheep; D012757:Sheep Diseases / Q000517:prevention & control*; D013307:Streptomycin / Q000627:therapeutic use*
chemical_list: D010406:Penicillins; D013307:Streptomycin