with attendance varying between 1000 to 2000 persons. They are held in the home-country of the President in office during the third year of his term of office. Location and dates of future and past Congresses are shown below:

Forthcoming congresses are:

• 17th Congress, 2008: Seoul, Republic of Korea
• 18th Congress, 2011: Milan, Italy

• 1st Congress, 1960: Moscow (USSR)
• 2nd Congress, 1963: Basle (CH)
• 3rd Congress, 1966: London (UK)
• 4th Congress, 1969: Warsaw (PL)
• 5th Congress, 1972: Paris (F)
• 6th Congress, 1975: Boston/Cambridge (USA)
• 7th Congress, 1978: Helsinki (SF)
• 8th Congress, 1981: Kyoto (J)
• 9th Congress, 1984: Budapest (H)
• 10th Congress, 1987: Munich (FRG)
• 11th Congress, 1990: Tallinn (USSR)
• 12th Congress, 1993: Sydney (AUS)
• 13th Congress, 1996: San Francisco (USA)
• 14th Congress, 1999: Beijing, P.R. China
• 15th Congress, 2002: Barcelona, Spain

• 16th Congress, 2005: Prague, Czech Republic