found:Enciclopedia de México, 1998(Zacatecas, Estado de)
found:Wikipedia, November 22, 2013(Zacatecas, officially Free and Sovereign State of Zacatecas (Spanish: Estado Libre y Soberano de Zacatecas), is one of the 31 states which, with the Federal District, comprise the 32 Federal Entities of Mexico; 23°17ʹ34ʺN 102°42ʹ02ʺW)
found:GEOnet, November 22, 2013(Zacatecas (approved); Estado de Zacatecas (approved); Zacatecas (short); first-order administrative division; Mexico; 23°00ʹ00ʺN 103°00ʹ00ʺW = 23 -103)