Editor's note: R66-15 a reduction technique for prime implicant tables - James F. Gimpel

Donald M.Y. Chang has pointed out an error in his recent review (ibid., vol, EC-14, pp. 535-541, August 1965). The last sentence of the review should have read, " ... the method does show promise ... " rather than, "the method does not show promise.... " This misprint completely changed the sense of the conclusion of the review, for which apologies are due Gimpel and Chang.