Papers from the third international discussion conference o-n operational research. 

 - Philadelphia, PA. : Sciences Department 
 - [58] p. 
 - S3 papers; 80-06 R. .
<br/><br/> 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.