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The Unz Review •ï¿½An Alternative Media Selection$
A Collection of Interesting, Important, and Controversial Perspectives Largely Excluded from the American Mainstream Media
The Literary Digest Archives
The Literary Digest •ï¿½42 Years, 2,037 Issues, 73,776 Articles, 115,219pp
Science and Invention
Measuring the Invisible
The Literary Digest, January 29, 1921, p. 27
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