List of chemical symbols. Most chemical elements are represented symbolically by two letters, generally the first two in their name. In some cases, the first letter together with some other letter from their name was used, particularly when their first two letters had already been allocated to another element.
Patterson Township, Beaver County, Pennsylvania. Patterson Township is a township in Beaver County, Pennsylvania, United States. The population was 3,029 at the 2010 census.
Upper Uwchlan Township (/ Ë juË k l Én /; ) is a township in Chester County, Pennsylvania, United States. The population was 11,227 at the 2010 census. The township included the community of Milford Mills before it was inundated by the creation of the Marsh Creek Dam in 1972.