Issue 50, Nov/Dec 1987
Issue 51, Jan/Feb 1988
Issue 52, March/April 1988
Issue 53, May/June 1988
Issue 54, July/Aug 1988
Issue 55, Sept/Oct 1988
Issue 56, Nov/Dec 1988
Issue 57, Jan/Feb 1989
Issue 58, March/April 1989
Issue 59, May/June 1989
Issue 6, July/August 1980
Issue 60, July/Aug 1989
Issue 61, Sept/Oct 1989
Issue 62, Nov/Dec 1989
Issue 63, Jan/Feb 1990
Issue 64, March/April 1990
Issue 65, May/June 1990
Issue 66, July/Aug 1990
Issue 67, Sept/Oct 1990
Issue 68, Nov/Dec 1990
Issue 69, Jan/Feb 1991
Issue 7, Sept/Oct 1980
Issue 70, March/April 1991
Issue 71, May/June 1991
