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Narva, river, Estonia and Russia

(Encyclopedia)Narva, river, c.50 mi (80 km) long, rising in Lake Peipus (Chudskoye), E Estonia, and flowing northeast past the city of Narva into the Gulf of Finland. It forms the border between Estonia and Russia....

National Aeronautics and Space Administration

(Encyclopedia)National Aeronautics and Space Administration (NASA), civilian agency of the U.S. federal government with the mission of conducting research and developing operational programs in the areas of space e...

Newfoundland and Labrador, province, Canada

(Encyclopedia)CE5 Newfoundland and Labrador nyo͞oˈfənlənd, nyo͞ofənlăndˈ; lăbˈrədôrˌ [key], province (2001 pop. 512,930), 156,185 sq mi (404,519 sq km), E Canada. The province consists of the island...

Obed Wild and Scenic River

(Encyclopedia)Obed Wild and Scenic River: see National Parks and Monuments (table)national parks and monuments (table). ...

Occupational Safety and Health Administration

(Encyclopedia)Occupational Safety and Health Administration (OSHA), U.S. agency established (1970) in the Dept. of Labor (see Labor, United States Department of) to develop and enforce regulations for the safety an...

Autolycus, Greek astronomer and mathematician

(Encyclopedia)Autolycus ôtŏlˈĭkəs [key], fl. 4th cent. b.c., astronomer and mathematician of Pitane in Aeolis. Of his two extant works, that on the revolving sphere is said to be the oldest completely preserve...

Oise, river, Belgium and France

(Encyclopedia)Oise, river, 186 mi (299 km) long, rising in the Ardennes Mts., S Belgium, and flowing through N France generally SW past Compiègne to join the Seine River near Pontoise. Navigable for most of its le...

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