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The Netherlands Society for Systems Research was founded on 9 May 1970 to promote interdisciplinary scientific activity on basis of a systems approach. It has its seat in Utrecht, The Netherlands. Officers for the year 1978: President: G. Broekstra, Graduate School of Management, Delft. Secretary: N. J. T. A. Kramer, Department of Industrial Engineering, Eindhoven University of Technology, Postbus 513, 5600 MB Eindhoven. Treasurer: J. N. Herbschleb, University of Utrecht. All information about the society can be obtained from the secretary. The editor ADDRESSES OF AUTHORS ~owakowaka, Maria, Institute of Praxiology, Polish Academy of Sciences, Warsa, Poland Van der Doef, P. , Institute for Developmental Psychology, Catholic Uni versity Nijmegen, Erasmuslaan 16, 6525 GG Nijmegen, The Netherlands Kickert, W. J. M. , Department of Industrial Engineering, Technological University of Eindhoven, P. O. Box 513, 5600 MB Eindhoven, The Nether lands Naerssen, R. F. van, Psychology Department, University of Amsterdam, The Netherlands Sijbrand, J. , Mathematical Institute, University of Utrecht, The Netherlands Vries, R. P. , de, Nieuwekade 17, Utrecht, The Netherlands Hezewijk, R. van, Institute of Criminology, Catholic University of Nijmegen, Oranjesingel 72, 6511 NZ nijmegen, The Netherlands Janssen, T. M. V. , Mathematical Centre, 2e Boerhaavestraat 49, 1091 AL Amsterdam, The Netherlands CONTENTS Nowakowska, Maria: On the logical structure of the development of a scientific domain. . . . . . . . . . . . . . . 1 Doef, P. van der: Psychotherapy as a problem of designing control in self-organizing and game-playing systems. . . . . . 27 Kickert, Walter J. M.
