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121sedimentary rock — Rock formed at or near the Earth s surface by the accumulation and lithification of fragments of preexisting rocks or by precipitation from solution at normal surface temperatures. Sedimentary rocks can be formed only where sediments are… …
122publishing, history of — Introduction an account of the selection, preparation, and marketing of printed matter from its origins in ancient times to the present. The activity has grown from small beginnings into a vast and complex industry responsible for the… …
123Boston — This article is about the capital of Massachusetts. For other uses, see Boston (disambiguation). Boston   City   Clockwise: Skyline of Back Bay seen from the …
124Thames Barrier — The Thames Barrier is a flood control structure on the River Thames, constructed between 1974 and 1984 at Woolwich Reach, and first used defensively in 1983. [ [http://ukpress.google.com/article/ALeqM5iu3JoAPQtQUYiBZLr0rUBYn2XJgQ Press… …
125NSA encryption systems — The National Security Agency took over responsibility for all U.S. Government encryption systems when it was formed in 1952. The technical details of most NSA approved systems are still classified, but much more about its early systems has become …
126Gun laws in the United States (by state) — U.S. Firearms Legal Topics Assault weapons ban ATF Bureau Brady Handgun Violence Prevention Act Concealed carry in the U.S. Domestic Violence Offender Gun Ban …
127Joint Light Tactical Vehicle — The Joint Light Tactical Vehicle is a U.S. Army, USSOCOM, and U.S. Marine Corps program to replace the current HMMWV with a family of more survivable vehicles and greater payload. In particular, the HMMWV was not designed to be an armored combat… …
128List of Canada's Worst Handyman episodes — This is a list of episodes for the first season of the Canadian television series Canada s Worst Handyman , where the worst contestant, as determined by 25 challenges over 12 days, is given the dubious title. Format Each of the first five… …
