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51Firewalls and Internet Security — First published in 1994, the book Firewalls and Internet Security: Repelling the Wily Hacker by William R. Cheswick and Steve Bellovin helped define the concept of a network firewall. Describing in detail one of the first major firewall… …
5233rd Infantry Brigade Combat Team (United States) — Infobox Military Unit unit name= 33rd Infantry Brigade Combat Team caption=33rd Infantry Brigade Combat Team shoulder sleeve insignia dates=2005 Present country=United States allegiance= branch=United States Army National Guard type=Infantry role …
53Ping-pong lemma — In mathematics, the ping pong lemma, or table tennis lemma, is any of several mathematical statements which ensure that several elements in a group acting on a set freely generate a free subgroup of that group.HistoryThe ping pong argument goes… …
54En quarantaine — (Quarantine) est un film américain réalisé par John Erick Dowdle en 2008. Il s agit d un remake du film espagnol [●REC] (Paco Plaza et Jaume Balagueró, 2007). Sommaire 1 Synopsis 2 Fiche technique 3 …
55Edward IV — 1442 83, king of England 1461 70, 1471 1483: 1st king of the house of York. * * * born April 28, 1442, Rouen, France died April 9, 1483, Westminster, Eng. King of England (1461–70, 1471–83). His father, a claimant to the throne, was killed in… …
56Hungary — /hung geuh ree/, n. a republic in central Europe. 9,935,774; 35,926 sq. mi. (93,050 sq. km). Cap.: Budapest. Hungarian, Magyarország. * * * Hungary Introduction Hungary Background: Hungary was part of the polyglot Austro Hungarian Empire, which… …
57acid–base reaction — ▪ chemistry Introduction a type of chemical process typified by the exchange of one or more hydrogen ions, H+, between species that may be neutral (molecules, such as water, H2O; or acetic acid, CH3CO2H) or electrically charged (ions, such… …
58Egypt — • Provides information on history, religion, and literature Catholic Encyclopedia. Kevin Knight. 2006. Egypt Egypt † …
59Chennai Snake Park Trust — Abbreviation CSPT Formation 1972 Type NGO Legal status Non profit public trust Purpose/focus Herpetofaunal conservation, research and education …
60Controversies relating to the Six-Day War — The Six Day War was fought between June 5 and June 10, 1967, by Israel and the neighboring states of Egypt [known then as the United Arab Republic (UAR)], Jordan, and Syria. The war began with a large scale surprise air strike by Israel on Egypt… …
