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United Nations Development Program

(Encyclopedia)United Nations Development Program (UNDP), agency of the United Nations, established in 1965 to unify the operations of the Expanded Program of Technical Assistance and the United Nations Special Fund...

Iquitos

(Encyclopedia)Iquitos ēkēˈtōs [key], city, capital of Loreto dept., NE Peru, on the Amazon River, c.2,3...

Niger, river, Africa

(Encyclopedia)Niger nīˈjər [key], great river of W Africa, c.2,600 mi (4,180 km) long, rising on the Fouta Djallon plateau, SW Guinea, and flowing NE through Guinea and into Mali. In central Mali the Niger forms...

Lymington and Pennington

(Encyclopedia)Lymington and Pennington lĭmˈĭngtən [key], town (1991 pop. 11,614), Hampshire, S England, on the Solent channel at the mouth of the Lymington River. It is a market town, resort, and port; coast tr...

Ucayali

(Encyclopedia)Ucayali o͞okäyäˈlē [key], river, c.1,000 mi (1,610 km) long, formed by the confluence of the Apurímac and Urubamba rivers, E Peru, and flowing generally north through a mountain and jungle wilde...

colleges and universities

(Encyclopedia)colleges and universities, institutions of higher education. Universities differ from colleges in that they are larger, have wider curricula, are involved in research activities, and grant graduate an...

Slavophiles and Westernizers

(Encyclopedia)Slavophiles and Westernizers, designation for two groups of intellectuals in mid-19th-century Russia that represented opposing schools of thought concerning the nature of Russian civilization. The dif...

Apurímac

(Encyclopedia)Apurímac apo͞orēˈmäk [key], river, c.430 mi (690 km) long, rising in the Andes, S Peru. It flows generally northwest in a narrow valley. After joining the Mantaro River, the Apurímac becomes the...

W and Z particles

(Encyclopedia)W and Z particles, elementary particles that mediate, or carry, the fundamental force associated with weak interactions. The discovery of the W and Z particles at CERN near Geneva, Switzerland, in the...

Castile and León

(Encyclopedia)Castile and León –lāōnˈ [key], autonomous community, 36,381 sq mi (94,227 sq km), N central Spain, ...