| Literature DB >> 5465453 |
W F Dodge, E F West, J G Holloway, E B Bridgforth, L B Travis.
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Year: 1970 PMID: 5465453 PMCID: PMC1349127 DOI: 10.2105/ajph.60.8.1421
Source DB: PubMed Journal: Am J Public Health Nations Health ISSN: 0002-9572