Am J Public Health Nations Health. 1929 Feb;19(2):218-21. doi: 10.2105/ajph.19.2.218.
American journal of public health and the nation's health
E R Hayhurst, L Greenburg
PMID: 18012688 PMCID: PMC1580967 DOI: 10.2105/ajph.19.2.218
[No abstract available.]