Duckworth, W. E. <br/><br/>
A guide to operational research / 
W. E. Duckworth, A. E. Gear, A. G. Lockett. 
 - 3d ed. 
 - London :  New York :  Chapman and Hall ;  Wiley,  1977. 
 - ix, 205 p. :  ill. ;  25 cm. 
<br/><br/> "A Halsted Press book." 
<br/><br/>Includes bibliographies and indexes. 
<br/><br/><label>ISBN: </label>0470991453 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Operations research.
<br/><br/><label>Dewey Class. No.: </label>658.4034  / DUG