| Literature DB >> 5461534 |
A P Black, R N Kinman, M A Keirn, J J Smith, W E Harlan.
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Year: 1970 PMID: 5461534 PMCID: PMC1348817 DOI: 10.2105/ajph.60.3.535
Source DB: PubMed Journal: Am J Public Health Nations Health ISSN: 0002-9572