Am J Public Health Nations Health. 1952 Jun;42(6):661-4. doi: 10.2105/ajph.42.6.661.
American journal of public health and the nation's health
C SINGER-BROOKS
PMID: 14923999 PMCID: PMC1526213 DOI: 10.2105/ajph.42.6.661
[No abstract available.]
Keywords: SCHOOLS