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Mathematics and Computers in Soviet Economic Planning. Edited by John P. Hardt, Marvin Hoffenberg, Norman Kaplan, and Herbert S. Levine. Yale Russian and East European Studies, 5. New Haven and London: Yale University Press, 1967. Xxii, 298 Pp. $7.50.Ekonomicheskaia Semiotika. Edited by N. P. Fedorenko. Moscow: "Nauka," 1970. 243 Pp. 89 Kopeks.