by Giddens, Anthony | Sutton, Philip W.
by Iglesias de Ussel, Julio | Trinidad Requena, Antonio.
by Pérez Medina, Juan Carlos.
by Picó, Josep | Sanchis, Enric.
by Coller, Xavier.
by Anaya Santos, Gonzalo.
by Tezanos, José Félix | Universidad Nacional de Educación a Distancia.
by Giner, Salvador.
by Giner, Salvador | Lamo de Espinosa, Emilio | Torres, Cristóbal.
by Hernández Sánchez, Alfredo | Universidad de Valladolid.
by Giddens, Anthony | Birdsall, Karen.