This volume contains the proceedings of the Workshop on Applications of Graph Theory to Management, held at the European Institute for Advanced Studies in Management, Brussels, March 20-21, 1979. In addition, contributed papers are included, many of which were presented at the Xth Mathematical Programming Symposium, Montreal, August 27-31, 1979. Research on Graph Theory and on Discrete Programming has been very active during the last decade; the intersection of both areas constitutes a particularly fruitful research domain. A variety of studies in the present volume illustrates the point, both as far as theory and applications are concerned. Some progress is made towards proving the deep Chvatal-Hammer conjecture on the
aggregation of inequalities in integer programming.