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World Congress 1
Canterbury, UK, 1989
World Congress 2
Adelaide, AU, 1994
World Congress 3
Prague, CZ 1997
World Congress 4
Bentota, SL 2001
World Congress 5
Stellenbosch, SA 2005
World Congress 6
Manaus, BR 2008
Archived Website
World Congress 7
Vancouver, CA 2012
World Congress 8
Hangzhou, CN 2016
World Congress 9
Dunedin, NZ 2020






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