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Abstract
Keywords: EPIDEMIOLOGY; HEPATITIS, INFECTIOUS; POLAND; RURAL HEALTH
Mesh: See more » Communicable DiseasesEpidemiologyHepatitisHepatitis AHumansPolandRural HealthViral Vaccines
Substances: See more » Viral Vaccines
Year: 1963 PMID: 14091320
Source DB: PubMed Journal: Arch Hyg Bakteriol ISSN: 0003-9144