@Book{BDG201890723127, title = "La cronolog\'{\i}a arqueol\'{o}gica por medio del carbono radioactivo", author = "S\'{a}ez Mart\'{\i}n, Bernardo", publisher = "Madrid : [s.n.]", editor = "[s.n.]", URL = "http://biblioteca.galiciana.gal/es/consulta/registro.do?id=490170", year = "1951", }