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Formulas for Various Areas (table)

(Encyclopedia)Formulas for Various Areas 1 The abbreviations used are: b = base (length of any side of a plane figure); a = altitude (perpendicular distance from the farthest point of the figure to t...

Elements (table)

(Encyclopedia)Elements 1 Parentheses indicate most stable isotope; brackets enclose lower and upper bounds of weight variation. ...

Aa, in European place names

(Encyclopedia)Aa ä [key] [from a word for “water” of the same Indo-European root as Lat. aqua], name of many small streams of N Europe and Switzerland. Aa, or a derivative of it, is a component part of hundred...

European Southern Observatory

(Encyclopedia)European Southern Observatory (ESO), an intergovernmental organization for astronomical research with headquarters in Garching, near Munich, Germany. The ESO began in 1962 as a consortium among Belgiu...

European Coal and Steel Community

(Encyclopedia)European Coal and Steel Community (ECSC), 1st treaty organization of what has become the European Union; established by the Treaty of Paris (1952). It is also known as the Schuman Plan, after the Fren...

Casimir II

(Encyclopedia)Casimir II, 1138–94, duke of Poland (1177–94), youngest son of Boleslaus III. A member of the Piast dynasty, he drove his brother Mieszko III from power at Kraków in 1177 and became the principal...

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