Operational Research '78: Procededings of the Eighth Ifors International Conference on Operationa; Research, Toronto, Canada, June 19-23, 1978: Actes de la Huitiaeme Ifors Confaerence Internationale de Recherche Opaerationelle, Toronto, Canada, Juin 19
Operational Research '78: Procededings of the Eighth Ifors International Conference on Operationa; Research, Toronto, Canada, June 19-23, 1978: Actes de la Huitiaeme Ifors Confaerence Internationale de Recherche Opaerationelle, Toronto, Canada, Juin 19...