Derechos de autor 1984 José María Villar Lacilla, César Ángel Chamorro Álvarez, Maximino Fernández Caso, Paulino de Paz Cabello
Except where otherwise noted, this item's license is described as Derechos de autor 1984 José María Villar Lacilla, César Ángel Chamorro Álvarez, Maximino Fernández Caso, Paulino de Paz Cabello