Peña Obregón Ángela, García Rivas A. System of fortifications Holguín-Gibara: The Battery Prim and the Fort Nº 7 of the Tannery. ARC [Internet]. 18Nov.2016 [cited 28Nov.2019];4(2):17-0. Available from: https://revistas.reduc.edu.cu/index.php/arcada/article/view/202