@Misc{BVMC:232901, author = {Blanco Freijeiro, Antonio}, title = {Dolmen de Arroyo (Simancas, Valladolid). Declaración de monumento histórico-arqueológico}, publisher = {Alicante : Biblioteca Virtual Miguel de Cervantes, 2006}, year = {2006}, url = {https://www.cervantesvirtual.com/nd/ark:/59851/bmc6d670} }