Columbia Encyclopedia

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periodical

(Encyclopedia)periodical, a publication that is issued regularly. It is distinguished from the newspaper in format in that its pages are smaller and are usually bound, and it is published at weekly, monthly, quarte...

children's book illustration

(Encyclopedia)children's book illustration, any type of picture or decorative work produced for books specifically intended for a youthful audience. During the 1960s a number of seldom-used techniques were introd...

newspaper

(Encyclopedia)newspaper, publication issued periodically, usually daily or weekly, to convey information and opinion about current events. In England large newspaper-publishing empires were built up by Lords...

rock music

(Encyclopedia)rock music, type of music originating in the United States in the mid-1950s and increasingly popular throughout much of the world. A turning point in rock music occurred in the mid-1970s in the ...

Rocky Mountains

(Encyclopedia)Rocky Mountains, major mountain system of W North America and easternmost belt of the North American cordillera, extending more than 3,000 mi (4,800 km) from central N.Mex. to NW Alaska; Mt. Elbert (1...

chemistry

(Encyclopedia)chemistry, branch of science concerned with the properties, composition, and structure of substances and the changes they undergo when they combine or react under specified conditions. Organic chemi...

Idaho

(Encyclopedia)CE5 Idaho īˈdəhō [key], one of the Rocky Mt. states in the NW United States. It is bordered by Montana and Wyoming (E), Utah and Nevada (S), Oregon and Washington (W), and the Canadian province...

asteroid

(Encyclopedia)CE5 The asteroid belt lies between the orbits of Mars and Jupiter. Gaps where no asteroids are found are called Kirkwood gaps. The Trojan asteroids share Jupiter's orbit with the planet. asteroid,...

economics

(Encyclopedia)economics, study of how human beings allocate scarce resources to produce various commodities and how those commodities are distributed for consumption among the people in society (see distribution). ...

Montana

(Encyclopedia)CE5 Montana mŏntănˈə [key], Rocky Mt. state in the NW United States. It is bounded by North Dakota and South Dakota (E), Wyoming (S), Idaho (W), and the Canadian provinces of British Columbia, ...