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North Fork of the Koyukuk Wild River

(Encyclopedia)North Fork of the Koyukuk Wild River: see Gates of the Arctic National Park and Preserve. ...

Manaus

(Encyclopedia)Manaus mänousˈ [key], city (1996 pop. 1,158,265), capital of Amazonas state, NW Brazil, on the Rio Negro. It is the chief commercial and cultural center of the upper Amazon region and an important r...

Teresina

(Encyclopedia)Teresina tārāzēˈnä [key], city (1991 pop. 599,272), capital of Piauí state, NE Brazil, on the Parnaíba River. It is the main commercial and agricultural distribution center in the Parnaíba val...

Chesapeake and Ohio Canal

(Encyclopedia)Chesapeake and Ohio Canal, former waterway, c.185 mi (300 km) long, from Washington, D.C., to Cumberland, Md., running along the north bank of the Potomac River. A successor to the Potomac Company's (...

Campos

(Encyclopedia)Campos kämˈpo͝os [key], city, Rio de Janeiro state, SE Brazil, on the Paraíba River near ...

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...

Lake Clark National Park and Preserve

(Encyclopedia)Lake Clark National Park and Preserve, S Alaska. Located across Cook Inlet from Anchorage, the park (2,619,733 acres/1,060,621 hectares) and adjacent preserve (1,410,325 acres/570,982 hectares) featur...

Cuiabá

(Encyclopedia)Cuiabá ko͞oyəbäˈ [key], city, capital of Mato Grosso state, SW Brazil, at the head of na...

Cochabamba

(Encyclopedia)Cochabamba kōchäbämˈbä [key], city, alt. c.8,400 ft (2,560 m), capital of Cochabamba dept., W ...

Campbell, Robert, Canadian fur trader and explorer

(Encyclopedia)Campbell, Robert, 1808–94, Canadian fur trader and explorer, b. Scotland. Employed as a young man by the Hudson's Bay Company, he was sent in 1834 to the Mackenzie River region, where he remained un...