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The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.
a city in Rumania, in Hunedoara District. Population, 28,500 (1970). Petrila is a coal-mining center of the Jiu River valley and the southern Carpathians.
The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.