Duckworth, W.E. <br/><br/>
Guide to operational research / 
W.E.Duckworth 
 - London :  Methuen ;  1962 
 - 145p.:  ill.;  20 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Operations research
<br/><br/><label>Dewey Class. No.: </label>330.183  / DUC