30x255: 22 December 1989
30x289: 8 December 1989
30x13: 8 November 1989
30x11: 26 July 1989
30x10: 8 May 1989
30x09: 13 March 1989
30x03: 8 February 1989
30x02: 6 February 1989
30x01: 1 February 1989
29x07: 7 December 1988