SP47 October 1, 1989
SP43 September 1, 1989
SP38 August 1, 1989
SP41 August 1, 1989
SP40 August 1, 1989
SP39 July 1, 1989
SP34 June 15, 1989
SP36 June 1, 1989
SP37 June 1, 1989
SP33 May 1, 1989
SP35 May 1, 1989
SP32 April 1, 1989
SP24 March 1, 1989
SP27 March 1, 1989
SP30 March 1, 1989
SP31 March 1, 1989
SP29 February 1, 1989
SP22 January 1, 1989
SP28 January 1, 1989
SP26 December 1, 1988
SP25 December 1, 1988
SP23 November 1, 1988
SP21 October 1, 1988
SP20 September 1, 1988
SP17 August 1, 1988
SP18 August 1, 1988
SP19 August 1, 1988
SP11 July 1, 1988
SP14 June 1, 1988
SP13 June 1, 1988
SP16 May 1, 1988
SP15 May 1, 1988
SP12 June 1, 1987
SP463 August 15, 1974
SPP-0089 August 15, 1974
sp-0577 August 15, 1974
