File:Bell drawings of the production of vowel sounds, 1867.jpg
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Summary
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English: When he was 19 years old, Aleck Bell did primary research on the production of vowel sounds which was recognized as novel by leading philologists. |
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| Source | Library of Congress | ||||||||||||||||||||
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Licensing
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This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 70 years or fewer. This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929. |
| This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. | |
File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 23:51, 22 November 2014 |  | 1,053 × 1,700 (818 KB) | Heritager | User created page with UploadWizard |
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