Columbia Encyclopedia

(Encyclopedia) Kaifeng kī-fŭng [key], city (1994 est. pop. 535,300), NE Henan prov., China, on the Longhai RR. It is a commercial, agricultural, and industrial center. Manufactures include agricultural machinery, ...

(Encyclopedia) Geologic Timescale 1 Not an era but the time preceding the Cambrian. ...

(Encyclopedia) Constellations 1 Zodiac constellation. ...

(Encyclopedia) Chao K'uang-yin jou kwäng-yĭn [key], Chinese emperor (960–79), founder of the Sung dynasty. A leading general during the short-lived Later Chou dynasty (951–60), he usurped the throne, and by th...

(Encyclopedia) Radio Frequencies

(Encyclopedia) Trigonometric Functions

(Encyclopedia)  Rulers of Spain since 1474(including dates of reign) Union of Castile and Aragón Hapsburg Dynasty Bourbon Dynasty French Intrusion Bourbon Restoration Elective Monarchy First Republic ...

(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...

(Encyclopedia)  Rulers of France since 987(including dates of reign) The Capetians House of Valois House of Bourbon The First Republic The First Empire Bourbon Restoration House of Bourbon-Orléans T...

(Encyclopedia)  Common Weights and Measures Length Area Volume and Capacity (Liquid and Dry) Weight (Mass) ...