@Book{BVMC:928091, author = {Barras de Aragón, Francisco de las}, title = {Tarjeta postal de [Francisco de las] Barras a Rafael Altamira. Sevilla, 21 de julio de 1910}, publisher = {Alicante : Biblioteca Virtual Miguel de Cervantes, 2018}, year = {2018}, url = {https://www.cervantesvirtual.com/nd/ark:/59851/bmc0928091} }