P A Graham, J Wallace. Show Affiliations »
Abstract
Entities: Disease
Mesh: See more » AgedBlindness/epidemiologyHealth SurveysHumansPostal ServicePublic AssistanceSurveys and QuestionnairesVision TestsVisual FieldsWales
Year: 1968 PMID: 5727150 PMCID: PMC1059152 DOI: 10.1136/jech.22.4.238
Source DB: PubMed Journal: Br J Prev Soc Med ISSN: 0007-1242