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121environmental works — ▪ civil engineering Introduction infrastructure that provides cities and towns with water supply, waste disposal, and pollution control services. They include extensive networks of reservoirs, pipelines, treatment systems, pumping stations …
122Internal ballistics — Internal ballistics, a subfield of ballistics, is the study of a projectile s behavior from the time its propellant s igniter is initiated until it exits the gun barrel. The study of internal ballistics is important to designers and users of… …
123Traumatic brain injury — See also: Brain injury (disambiguation) Traumatic brain injury Classification and external resources …
124Area codes in Germany — see also Telephone numbering in Germany for further codes including service numbers, cell phones etc. Area codes in Germany (German Vorwahl ) have two to five digits, not counting the leading zero. The leading zero must be dialed when calling… …
125Civil engineering and infrastructure repair in New Orleans after Hurricane Katrina — This article covers the levee system and infrastructure repairs in New Orleans, Louisiana following Hurricane Katrina. Hurricane Katrina …
126Option (finance) — Stock option redirects here. For the employee incentive, see Employee stock option. Financial markets Public market Exchange Securities Bond market Fixed income …
127Hungary — /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… …
128radioactivity — /ray dee oh ak tiv i tee/, n. Physics, Chem. the phenomenon, exhibited by and being a property of certain elements, of spontaneously emitting radiation resulting from changes in the nuclei of atoms of the element. Also called activity. [1895… …
