Am J Public Health Nations Health. 1967 Jul;57(7):1087-8. doi: 10.2105/ajph.57.7.1087.
American journal of public health and the nation's health
P S Broughton
PMID: 5338432 PMCID: PMC1227523 DOI: 10.2105/ajph.57.7.1087 Free PMC Article
[No abstract available.]