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1.Bell, Alexander Graham, 1847-1922

Personal name	Bell, Alexander Graham, 1847-1922
Biographical Note	Americký audiolog a vynálezce skotskéhopůvodu, 1876 patent na vynález telefonu, vylepšil telegraf; bel nebo decibel (db)- jednotka pro hladinu intenzity zvuku v Si.
File	Personal names and family names file
References	(4) - Articles

Bell, Alexander Graham, 1847-1922

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