[Epidemiology of typhus exanthematosus in Poland during inter-epidemic periods].
D011044:Poland; D014435:Typhoid Fever / Q000453:epidemiology*; D014438:Typhus, Epidemic Louse-Borne
TYPHOID FEVER/epidemiology
Epidemiologia duru osutkowego w Polsce w okresie miedzyepidemicznym.