Am J Public Health Nations Health. 1956 Oct;46(10):1338. doi: 10.2105/ajph.46.10.1338.
American journal of public health and the nation's health
[No authors listed]
PMID: 18017584 PMCID: PMC1624084 DOI: 10.2105/ajph.46.10.1338
[No abstract available.]