Volume 18, Number 1, January 4, 1991
Volume 18, Number 2, January 11, 1991
Volume 18, Number 3, January 18, 1991
Volume 18, Number 4, January 25, 1991
Volume 18, Number 5, February 1, 1991
Volume 18, Number 6, February 8, 1991
Volume 18, Number 7, February 15, 1991
Volume 18, Number 8, February 22, 1991
Volume 18, Number 9, March 1, 1991
Volume 18, Number 10, March 8, 1991
Volume 18, Number 11, March 15, 1991
Volume 18, Number 12, March 22, 1991
Volume 18, Number 13, March 29, 1991
Volume 18, Number 14, April 12, 1991
Volume 18, Number 15, April 19, 1991
Volume 18, Number 16, April 26, 1991
Volume 18, Number 17, May 3, 1991
Volume 18, Number 18, May 10, 1991
Volume 18, Number 19, May 17, 1991
Volume 18, Number 20, May 24, 1991
Volume 18, Number 21, May 31, 1991
Volume 18, Number 22, June 7, 1991
Volume 18, Number 23, June 14, 1991
Volume 18, Number 26, July 5, 1991
Volume 18, Number 27, July 19, 1991
Volume 18, Number 28, July 26, 1991
Volume 18, Number 29, August 2, 1991
Volume 18, Number 30, August 9, 1991
Volume 18, Number 31, August 16, 1991
Volume 18, Number 32, August 23, 1991
Volume 18, Number 33, August 30, 1991
Volume 18, Number 34, September 6, 1991
Volume 18, Number 35, September 13, 1991
Volume 18, Number 36, September 20, 1991
Volume 18, Number 37, September 27, 1991
Volume 18, Number 38, October 4, 1991
Volume 18, Number 39, October 11, 1991
Volume 18, Number 40, October 18, 1991
Volume 18, Number 41, October 25, 1991
Volume 18, Number 42, November 1, 1991
Volume 18, Number 43, November 8, 1991
Volume 18, Number 44, November 15, 1991
Volume 18, Number 45, November 22, 1991
Volume 18, Number 46, November 29, 1991
Volume 18, Number 47, December 6, 1991
