Authors: David A. Ward (Canada), John F. Avery Jones (United Kingdom), Luc De Broe (Belgium), Maarten J. Ellis (The Netherlands), Sanford H. Goldberg (United States), Juergen Killius (Germany), Jean-Pierre Le Gall (France), Guglielmo Maisto (Italy), Toshio Miyatake (Japan), Henri Torrione (Switzerland), Kees van Raad (The Netherlands), Bertil Wiman (Sweden) |