Volume 60 – No. 1-4
December 1987
Volume 59 – No. 1-4
December 1986
Volume 58 – No. 1-4
December 1985
Volume 57 – No. 1-4
December 1984
Volume 56 – No. 1-4
December 1983
Volume 55 – No. 1-4
December 1982
Volume 54 – No. 1-4
December 1981
Volume 53 – No. 1-4
December 1980
Volume 52 – No. 1-4
December 1979
Volume 51 – No. 1-4
December 1978