@Book{BVPB20070013748, title = "El ateismo y la sintaxis y el positivismo", author = "Pindado, Francisco", publisher = "Le\'{o}n : [s.n.]", editor = "[s.n.]", URL = "https://bvpb.mcu.es/es/consulta/registro.do?id=398220", year = "1895", }