Letter The author thanks for being invited to the Symposium on Implementation of Algorithmic Languages, but he cannot present a talk. He can neither attend the Conference on Artificial Intelligence because of the meeting of the Working Group on Data-Bases. The letter touches also the previous meeting of the said Group. Date: 22.05.1975 Original document language: russian Authors: Gennadi K. Stolyarov Persons: Felix R. Tsang, A. V. Zamulin Addressee: Andrei Petrovich Ershov
