[Beginnings of smallpox vaccination in Poland].
D049672:History, 19th Century; D006801:Humans; D011044:Poland; D012900:Smallpox Vaccine / Q000266:history*; D014611:Vaccination / Q000266:history*
D012900:Smallpox Vaccine
O poczatkach szczepienia ospy krowiej na ziemiach polskich.