Redaktionen -. Use of systems of models in planning. Seminar on the Use of Systems of Models in Planning, Moscow (USSR), 2-11 December 1974. New York: United Nations, 1975. 302 pp. $ 12,00. NT 76-3058. nt [Internet]. 1. januar 1976 [henvist 21. maj 2024];114. Tilgængelig hos: https://tidsskrift.dk/nationaloekonomisktidsskrift/article/view/62705