| Literature DB >> 5058861 |
B D Challenor, J Schermerhorn, J A Collins, B Hill, B Wornum, N Perlman.
Abstract
Mesh:
Year: 1972 PMID: 5058861 PMCID: PMC1530302 DOI: 10.2105/ajph.62.2.223
Source DB: PubMed Journal: Am J Public Health ISSN: 0090-0036 Impact factor: 9.308