| Literature DB >> 5466730 |
P A Gross, S F Grigsby, B A Kogan, G A Heidbreder.
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Year: 1970 PMID: 5466730 PMCID: PMC1349079 DOI: 10.2105/ajph.60.9.1839
Source DB: PubMed Journal: Am J Public Health Nations Health ISSN: 0002-9572