| Literature DB >> 4370741 |
W H Barker, J C Sagerser, C V Hall, H W Anderson, B J Francis.
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Year: 1974 PMID: 4370741 PMCID: PMC1775568 DOI: 10.2105/ajph.64.9.854
Source DB: PubMed Journal: Am J Public Health ISSN: 0090-0036 Impact factor: 9.308