August 1991 Vol. 16, No. 1 8 1,262k September 1991 Vol. 16, No. 2 16 2,405k September 1991 Vol. 16, No. 3 8 1,431k September 1991 Vol. 16, No. 4 8 1,289k September 1991 Vol. 16, No. 5 8 1,472k September 1991 Vol. 16, No. 6 8 1,280k September 1991 Vol. 16, No. 7 24 2,160k September 1991 Vol. 16, No. 8 8 1,271k September 1991 Vol. 16, No. 9 8 1,081 September 1991 Vol. 16, No. 10 12 1,864k
