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.
Brush Valley Township, Indiana County, Pennsylvania. Brush Valley Township is a township in Indiana County, Pennsylvania, United States. Brush Valley Township was formed from Wheatfield Township in 1835, and named for the valley of Brush Creek. The population was 1,881 at the 2000 census. It includes the communities of Brush Valley (formerly called Mechanicsburg), Claghorn, Dias, Heshbon, Littletown, Rico, and Suncliff. Geography