| Literature DB >> 4399650 |
K G Johnson, J H Donnelly, R Scheble, R L Wine, M Weitman.
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Year: 1971 PMID: 4399650 PMCID: PMC1530048 DOI: 10.2105/ajph.61.12.2418
Source DB: PubMed Journal: Am J Public Health ISSN: 0090-0036 Impact factor: 9.308