12) Troubetzkoy, Paul, Prince. The Columbia Encyclopedia, Sixth Edition. 2001
...The son of a Russian nobleman and an American woman, Troubetzkoy worked in Russia, France, Italy, and the United States. His sculpture was influenced by the impressionism...

13) Glendora. The Columbia Encyclopedia, Sixth Edition. 2001
...Los Angeles metropolitan area, at the base of the San Gabriel Mts.; inc. 1911. Plastics and transportation equipment are made in the city. The region was declared...

14) fluoridation. The Columbia Encyclopedia, Sixth Edition. 2001
...Tooth enamel ordinarily contains small amounts of fluorides and when the amount is augmented through the intake of fluoridated water, especially during the first...

15) Metropolitan Museum of Art. The Columbia Encyclopedia, Sixth Edition. 2001
...Metropolitan Museum of Art, New York City, founded in 1870. The Metropolitan Museum is the foremost repository of art in the United States. It opened in 1880 on its...

16) Brea. The Columbia Encyclopedia, Sixth Edition. 2001
...Most industries are related to the production and processing of oil. Other manufactures include rubber products, tools, automobile parts, and chemicals. In recent...

17) South Georgia. The Columbia Encyclopedia, Sixth Edition. 2001
...South Georgia, island, c.1,450 sq mi (3,760 sq km), S Atlantic Ocean, c.1,200 mi (1,930 km) E of Cape Horn. A dependency of the Falkland Islands from 1908 to 1985...

18) Changsha. The Columbia Encyclopedia, Sixth Edition. 2001
...The name, which means "long sandbank," is derived from an island in the river. Changsha is an agricultural distribution and market center, an important stop on the...

19) Pennsylvania Railroad. The Columbia Encyclopedia, Sixth Edition. 2001
...Pennsylvania Railroad, former U.S. transportation company; inc. 1846 by the Pennsylvania legislature. It opened in 1854 as a single-track line between Philadelphia...

20) Worth, Charles Frederick. The Columbia Encyclopedia, Sixth Edition. 2001
...Charles Frederick, 1825-95, French and British fashion designer. He was the founder of the Maison Worth in Paris and London, the longest running fashion dynasty,...