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23.06.1951 |
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1952 |
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22.05.1952 |
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19.-21.09.1952 |
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1953 - 1954 |
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1953 |
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1954 |
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1959/1965/1968 |
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1960 - 1967 |
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13.08.1961 |
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1964/1966/1967 |
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1964, 1965, 1971 |
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1972 |
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1981 |
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1981 - 1983 |
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09.11.1989 |
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15.12.1990 |
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1991 |
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1995- 1996 |
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22-24.08.1997 |
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Sept. 1997 |
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2000 |
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23.06.2006 |
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