| Literature DB >> 4964804 |
J B Harstad, H M Decker, L M Buchanan, M E Filler.
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Year: 1967 PMID: 4964804 PMCID: PMC1228011 DOI: 10.2105/ajph.57.12.2186
Source DB: PubMed Journal: Am J Public Health Nations Health ISSN: 0002-9572