E Walker, G Williams. Show Affiliations »
Abstract
Mesh: See more » Communicable Disease ControlFoodHumansImmunizationInsurance, HealthTravelWater Supply
Year: 1983 PMID: 6402142 PMCID: PMC1546610 DOI: 10.1136/bmj.286.6364.541
Source DB: PubMed Journal: Br Med J (Clin Res Ed) ISSN: 0267-0623