XYZ Association Francaise de Topographie: No 29, Dec 1986; No 31, Jun 1987; No 34, Feb 1988; No 35, Apr 1988; No 36, Jul 1988; No 37, Oct 1988; No 38, Jan 1989; No 39, Apr 1989; No 40, Jul 1989; No 41-42, Oct 1989-Jan 1990; No 43-44, Apr-Jul 1990; No 45, Oct 1990; No 48, Jul 1991; No 49, Oct 1991...