| Literature DB >> 5128605 |
E J Cassell, M D Lebowitz, D W Wolter, J R McCarroll.
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Year: 1971 PMID: 5128605 PMCID: PMC1530058 DOI: 10.2105/ajph.61.12.2348
Source DB: PubMed Journal: Am J Public Health ISSN: 0090-0036 Impact factor: 9.308