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Goodyear, Charles

(Encyclopedia)Goodyear, Charles, 1800–1860, American inventor, b. New Haven, Conn., originator of vulcanized rubber. He failed in his earlier business ventures and was in jail for debt when he began his experimen...

Douglas, Donald Wills

(Encyclopedia)Douglas, Donald Wills, 1892–1981, aviation pioneer and aerospace executive, b. Brooklyn, N.Y., B.S. Massachusetts Institute of Technology, 1914. He helped design the first wind tunnel (1914–15) an...

fluoridation

(Encyclopedia)fluoridation flo͝orˌĭdāˈshən [key], process of adding a fluoride to the water supply of a community to preserve the teeth of the inhabitants. Tooth enamel ordinarily contains small amounts of fl...

Blanc, Louis

(Encyclopedia)Blanc, Louis lwē bläN [key], 1811–82, French socialist politician and journalist and historian. In his noted Organisation du travail (1840, tr. Organization of Work, 1911), he outlined his ideal o...

Ramotar, Donald Rabindranauth

(Encyclopedia)Ramotar, Donald Rabindranauth, 1950–, Guyanese political leader. An economist, he joined the People's Progressive party (PPP) in 1967, was elected to its central committee (1979) and executive commi...

Kopacz, Ewa

(Encyclopedia)Kopacz, Ewa, 1956–, Polish politician. A graduate of the Medical Univ. of Lublin (1981), she worked as a pediatrician and as a health-care administrator. Kopacz was first elected to parliament as a ...

Regan, Donald Thomas

(Encyclopedia)Regan, Donald Thomas rēˈgən [key], 1918–2003, U.S. government official and financier, b. Cambridge, Mass. A graduate of Harvard (B.A. 1940), he went to work (1946) at a brokerage house that becam...

Harlem Renaissance

(Encyclopedia)Harlem Renaissance, term used to describe a flowering of African-American literature and art in the 1920s, mainly in the Harlem district of New York City. During the mass migration of African American...

Mackenzie, Sir William

(Encyclopedia)Mackenzie, Sir William, 1849–1923, Canadian railroad builder and financier, b. Ontario. In the early 1870s he became a railroad contractor. He constructed portions of the Canadian National and the C...
 

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