Proceedings of the ninth IFORS international conference on operational research, Hamburg, Germany, July 20-24 1981  
/ International Federation of Operational Research Societies  
 - Amsterdam:   North-Holland Publishing Company,   1981 
 - xx, 984p.   
<br/><br/><label>Subjects--Topical Terms: </label><br/>Business management
<br/><br/><label>Subjects--Index Terms: </label>Planning  Goals  
<br/><br/><label>Universal Decimal Class. No.: </label>65.012.1(082.2)   / M1