Communications of the ACM (CACM), Volume 12, 1969

Volume 12, Number 1, January 1969

Volume 12, Number 2, February 1969

Volume 12, Number 3, March 1969

Volume 12, Number 4, April 1969

Volume 12, Number 5, May 1969

Volume 12, Number 6, June 1969

Volume 12, Number 7, July 1969

Volume 12, Number 8, August 1969

Volume 12, Number 9, September 1969

Volume 12, Number 10, October 1969

Volume 12, Number 11, November 1969

Volume 12, Number 12, December 1969