by Antoinette de Vaucouleurs and Giuseppe Longo ; with the collaboration of Marshall Joy ; and an introduction by G. de VaucouleursDept. of Astronomy, University of Texas at Austin1988
by Giuseppe Longo and Antoinette de Vaucouleurs ; with the collaboration of H.G. Corwin, Jr. ; and an introduction by G. de VaucouleursDept. of Astronomy, University of Texas at Austin1983