title: [SOME PROBLEMS OF SMALLPOX VACCINATION].
mesh_terms: D006801:Humans; D012899:Smallpox; D012900:Smallpox Vaccine; D014611:Vaccination
chemical_list: D012900:Smallpox Vaccine
keywords: SMALLPOX VACCINE
vernacular_title: NIEKT'ORE ZAGADNIENIA SZCZEPIE'N OCHRONNYCH PRZECIWKO OSPIE NATURALNEJ.