[On a study of the natural focality of leptospirosis in Mordva ASSR].
D000382:Agricultural Workers' Diseases / Q000453:epidemiology*; D000818:Animals; D004197:Disease Reservoirs; D006801:Humans; D007922:Leptospirosis / Q000453:epidemiology*; D012426:Russia
K izucheniiu prirodnoĭ ochagovosti leptospirozov v mordovskoĭ ASSR.