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31North America — North American. the northern continent of the Western Hemisphere, extending from Central America to the Arctic Ocean. Highest point, Mt. McKinley, 20,300 ft. (6187 m); lowest, Death Valley, 276 ft. (84 m) below sea level. 400,000,000 including… …
32photoengraving — /foh toh en gray ving/, n. 1. a photographic process of preparing printing plates for letterpress printing. 2. a plate so produced. 3. a print made from it. [1870 75; PHOTO + ENGRAVING] * * * Any of several processes for producing printing plates …
33Puerto Rico — Puerto Rican. /pwer teuh ree koh, pwer toh, pawr teuh, pohr /; Sp. /pwerdd taw rddee kaw/ an island in the central West Indies: a commonwealth associated with the U.S. 3,196,520; 3435 sq. mi. (8895 sq. km). Cap.: San Juan. Formerly (until 1932),… …
34Color television — Title card for NBC, promoting their broadcast in RCA color . Color television is part of the history of television, the technology of television and practices associated with television s transmission of moving images in color video. In its most… …
35Ohio Department of Transportation — (ODOT) Emblem of the Ohio Department of Transportation Agency overview Formed …
36San Francisco — This article is about the city and county in California. For other uses, see San Francisco (disambiguation). San Francisco   City and county   City and County of San Francisco …
37Iowa Primary Highway System — Iowa s primary highway system System information Notes: Primary highways in Iowa are generally state maintained …
38Communications in India — This article is about communications in India. For a more general coverage of media in India, see Media of India. The Republic of India possesses a diversified communications system that links all parts of the country by Internet, telephone,… …
39Cogan House Covered Bridge — Coordinates: 41°23′54″N 77°12′03″W / 41.39833°N 77.20083°W / 41.39833; 77.20083 …
40Dayton, Ohio — Dayton redirects here. For the Dayton metropolitan area, see Greater Dayton. For other uses, see Dayton (disambiguation). City of Dayton   City   …
