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HearingShowing 1 featured edition. View all 1 editions?
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Hearing levels of adults by education, income, and occupation, United States, 1960-1962: prevalence rates for hearing threshold in the better ear in excess of 15 decibels above and 5 decibels or more below audiometric zero, as determined by pure-tone audiometric tests at frequencies of 500, 1000, 2000, 3000, 4000, and 6000 cycles per second
1968, U.S. Dept. of Health, Education, and Welfare, Public Health Services; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.]
in English
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Bibliography: p. 10.
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- Created April 1, 2008
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January 6, 2023 | Edited by MARC Bot | import existing book |
October 5, 2020 | Edited by MARC Bot | import existing book |
December 14, 2009 | Edited by WorkBot | link works |
April 1, 2008 | Created by an anonymous user | Imported from Scriblio MARC record |