Duckworth, Walter Eric <br/><br/>
A guide to operational research / 
by W.E. Duckworth. 
 - [2d.ed.] 
 - London :  Methuen,  [1965] 
 - 156 p. illus. 21 cm. 
 - Universityn paperbacks, no. 20 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>operation research
<br/><br/><label>LC Class. No.: </label>658.54  / D858