Issue No. 12 - December (1972 vol. 21)
U.O. Gagliardi , Cen. Res. Comput. Technol. Harvard Univ.
The book is composed of three major parts: a dialogue on the fourth generation theme, a series of papers (called presentations), and finally six invited papers.
U.O. Gagliardi, "B72-27 The Fourth Generation", IEEE Transactions on Computers, vol. 21, no. , pp. 1459, December 1972, doi:10.1109/T-C.1972.223529