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Prague, Czechoslovakia, 29 August–2 September 1988
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Prague, Czechoslovakia, 6–9 July 1987
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Bechyne, Czechoslovakia, 22–26 June 1987
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Prague, Czechoslovakia, 7–10 July 1986
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Prague, Czechoslovakia, 8–11 July 1985
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Prague, Czechoslovakia, 16–19 July 1984
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Prague, Czechoslovakia, 9–12 July 1984
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Prague, Czechoslovakia, 18–21 July 1983
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Prague, Czechoslovakia, 11–14 July 1983
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Prague, Czechoslovakia, 19–22 July 1982
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Prague, Czechoslovakia, 20–23 July 1981
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Karlovy Vary, Czechoslovakia, 22–26 September 1980
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Karlovy Vary, Czechoslovakia, 15–19 September 1980
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Prague, Czechoslovakia, 16–19 July 1979
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Prague, Czechoslovakia, 9–12 July 1979
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Bratislava, Czechoslovakia, 3–6 July 1979
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Prague, Czechoslovakia, 4–8 September 1978
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Prague, Czechoslovakia, 17–21 July 1978
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Prague, Czechoslovakia, 10–13 July 1978
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Prague, Czechoslovakia, 12–16 July 1976
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Bratislava, Czechoslovakia, 1–4 July 1975
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Prague, Czechoslovakia, 9–13 September 1974
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Marianske Lazne, Czechoslovakia, 2–5 September 1974
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Marianske Lazne, Czechoslovakia, 26–29 August 1974
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Bratislava, Czechoslovakia, 5–9 August 1974
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Prague, Czechoslovakia, 27–30 August 1973
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Prague, Czechoslovakia, 20–23 August 1973
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Prague, Czechoslovakia, 28 August–2 September 1972
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Prague, Czechoslovakia, 28 August–2 September 1972
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Marianske Lazne, Czechoslovakia, 28 August–1 September 1972
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Prague, Czechoslovakia, 30 August–9 September 1971
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Prague, Czechoslovakia, 30 August–9 September 1971
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Bratislava, Czechoslovakia, 22–24 June 1971
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Castle Liblice near Prague, Czechoslovakia, 21–25 June 1971
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Prague, Czechoslovakia, 7–10 September 1970
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Prague, Czechoslovakia, 1–11 September 1969
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Prague, Czechoslovakia, 23–26 September 1968
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Prague, Czechoslovakia, 16–19 September 1968
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Prague, Czechoslovakia, 4–9 September 1967
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Prague, Czechoslovakia, 6–9 September 1965
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Prague, Czechoslovakia, 27 August–2 September 1962
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Prague, Czechoslovakia, 14–17 April 1959