00421nam a2200121Ia 4500082002200000100006400022245017100086260002000257300000600277500000500283653000600288700000500294  a309.5068bC748.PI  aConference on "Transportation", New Delhi, Nov. 26-28, 1980  aProceedings of the International conference on transportation organised by O. R. Society of India and International Federation of the Operational Research Societiesb  bThe Auth.c1980  a   a  a   a