Journal Article Health and Communication in a Negro Census Tract Get access Wylda Cowles, Wylda Cowles School of Public Health University of California (Berkeley) Search for other works by this author on: Oxford Academic PubMed Google Scholar Steven Polgar, Steven Polgar School of Public Health University of California (Berkeley) Search for other works by this author on: Oxford Academic PubMed Google Scholar Leonard Simmons, Leonard Simmons School of Public Health University of California (Berkeley) Search for other works by this author on: Oxford Academic PubMed Google Scholar John Switzer John Switzer School of Public Health University of California (Berkeley) Search for other works by this author on: Oxford Academic PubMed Google Scholar Social Problems, Volume 10, Issue 3, Winter 1963, Pages 228–236, https://doi.org/10.2307/799431 Published: 08 August 2014
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Cowles et al. (1963) studied this question.