@Book{BDCM20211561350, title = "A synopsis of the silurian fossils", author = "Griffith, Richard", publisher = "Dublin : [s.n.]", editor = "[s.n.]", URL = "https://bibliotecavirtualmadrid.comunidad.madrid/bvmadrid_publicacion/es/consulta/registro.do?id=195893", year = "1846", }