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Hearing Tests

Nature volume 145, page 79 (13 January 1940) | Download Citation



IN the December number of the Bell Laboratories Record, Mr. H. C. Montgomery, of the Acoustical Research Department of the Bell Laboratories, discusses results obtained by subjecting many of the visitors at the World's Fairs to tests of the quality of their hearing. The records obtained enabled him to get nearly three-quarters of a million of records carried out in the same way.

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