J D PORTERFIELD. Show Affiliations »
Abstract
Keywords: PUBLIC HEALTH/statistics
Mesh： See more » HumansPublic Health/statistics & numerical data
Year: 1953 PMID： 13065536 PMCID： PMC1620320 DOI： 10.2105/ajph.43.7.840
Source DB: PubMed Journal: Am J Public Health Nations Health ISSN： 0002-9572