[Experience in raising pigs on a farm unfavorable with respect to viral pneumonia].
D000383:Agriculture; D000818:Animals; D005260:Female; D011024:Pneumonia, Viral / Q000662:veterinary*; D011247:Pregnancy; D013552:Swine; D013553:Swine Diseases / Q000209:etiology*; D014586:USSR
Opyt vyrashchivaniia porosiat v khoziaĭstve, neblagopoluchnom po virusnoĭ pnevmonii.