1 November 1980 - 2 November 1980
20 September 1980 - 21 September 1980
27 July 1980 - 1 August 1980
9 April 1980 - 16 April 1980
27 October 1979 - 28 October 1979
22 September 1979 - 23 September 1979
19 August 1979 - 31 August 1979
4 April 1979 - 11 April 1979
11 November 1978 - 12 November 1978
20 August 1978 - 25 August 1978
