shorter-range intermediate nuclear forces
61Earthquake — For other uses, see Earthquake (disambiguation). Global earthquake epicenters, 1963–1998 …
62Sweden — /sweed n/, n. a kingdom in N Europe, in the E part of the Scandinavian Peninsula. 8,946,193; 173,732 sq. mi. (449,964 sq. km). Cap.: Stockholm. Swedish, Sverige. * * * Sweden Introduction Sweden Background: A military power during the 17th… …
63Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… …
64Egypt, ancient — Introduction civilization in northeastern Africa dating from the 3rd millennium BC. Its many achievements, preserved in its art and monuments, hold a fascination that continues to grow as archaeological finds expose its secrets. This article… …
65Star — For other uses, see Star (disambiguation) …
66Aerial refueling — A C 17 Globemaster refuels through the boom of a Boeing KC 135 Stratotanker …
67Air Force of the Army of the Guardians of the Islamic Revolution — The Air Force of the Army of the Guardians of the Islamic Revolution (AFAGIR), also known as the Islamic Revolutionary Guard Corps Air Force (IRGC AF), is the air force within the Army of the Guardians of the Islamic Revolution (Islamic… …
68Petroleum — For other uses, see Petroleum (disambiguation). Proven world oil reserves, 2009 …
69Czech Republic — a republic in central Europe: includes the regions of Bohemia, Moravia, and part of Silesia; formerly part of Czechoslovakia; independent since 1993. 10,318,958; 30,449 sq. mi. (78,864 sq. km). Cap.: Prague. * * * Czech Republic Introduction… …
70chemical bonding — ▪ chemistry Introduction any of the interactions that account for the association of atoms into molecules, ions, crystals, and other stable species that make up the familiar substances of the everyday world. When atoms approach one another …
