Prior World Congresses

XI World Congress
   Trondheim, Norway
   2004

IX World Congress
   Bucharest, Romania
   1996

VII World Congress
   Bologna, Italy
   1988

V World Congress
   Mexico City, Mexico
   1980

III World Congress
   Baton Rouge, Louisiana, USA
   1972

I World Congress
   Dijon, France
   1964

X World Congress
   Rio de Janeiro, Brazil
   2000

VIII World Congress
   State College PA, USA
   1992

VI World Congress
   Manilla, The Philippines
   1984

IV World Congress
   Torun, Poland
   1976

II World Congress
   Enschede, The Netherlands
   1968