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Oka, river, central European Russia

(Encyclopedia) Oka əkäˈ [key], river, c.925 mi (1,490 km) long, rising S of Orel, central European Russia. It flows N past Orel and Kaluga, E past Serpukhov, Kolomna, and Ryazan, and then NE past Murom to join th...

Pecos, river, United States

(Encyclopedia) Pecos, river, 926 mi (1,480 km) long, rising in N N.Mex. near the Truchas peaks and flowing SE across E N.Mex. and W Tex. to the Rio Grande; drains c.38,300 sq mi (99,200 sq km). In New Mexico, dams a...

River Rouge

(Encyclopedia) River Rouge ro͞ozh [key], city (1990 pop. 11,314), Wayne co., SE Mich., an industrial suburb of Detroit, on the Detroit and Rouge rivers; settled c.1817, inc. 1899. It is a port of entry, with automo...

Clwyd, river, Wales

(Encyclopedia) Clwyd, river, c.30 mi (50 km) long, rising in Denbighshire, N Wales. It flows N through the Vale of Clwyd to the Irish Sea at Rhyl. The vale is notable for its excellent pastureland. ...

fats and oils

(Encyclopedia) fats and oils, group of organic substances that form an important part of the diet and also are useful in many industries. The fats are usually solid, the oils generally liquid at ordinary room temper...

John D. and Catherine T. MacArthur Foundation

(Encyclopedia) John D. and Catherine T. MacArthur Foundation, philanthropic institution founded 1978 by John D. MacArthur (1897–1978), owner of a prominent insurance company and other businesses, and his wife Cath...

Wood River

(Encyclopedia) Wood River, city (1990 pop. 11,490), Madison co., SW Ill., on the Mississippi River just above its junction with the Missouri; inc. 1923. It has oil refineries and pipeline terminals, and petroleum ad...

Ayolas, Juan de

(Encyclopedia) Ayolas, Juan de hwän dā äyōˈläs [key], d. 1537?, Spanish conquistador, explorer of the Río de la Plata country. He accompanied Pedro de Mendoza on his expedition of 1535–36. Sent to look for ...

Swansea, city and county, Wales

(Encyclopedia) Swansea swŏnˈzē, –sē [key], Welsh Abertawe, city (1981 pop. 172,433) and county, 146 sq mi (378 sq km), S Wales. Located on Swansea Bay at the mouth of the Tawe River, the city of Swansea is a m...

Valdivia, Pedro de

(Encyclopedia) Valdivia, Pedro de pāˈdhrō dā väldēˈvyä [key], c.1500–1554, Spanish conquistador, conqueror of Chile. One of Francisco Pizarro's best officers in the conquest of Peru, educated, energetic, s...
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