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Papers from the third international discussion conference o-n operational research. - Philadelphia, PA. : Sciences Department - [58] p. - S3 papers; 80-06 R. .

Contenido: Systemic inactivism in National development plan-ning / Wladimir M. Sachs -- Education and profession in OR -/ Thomas A. Cowan -- The art and science of MESS management- / Russell L. Ackoff -- Proactivism and corporate environme-ntal scanning / Donald J. Kalff.