Beckmann, M. <br/><br/>
Lecture notes in poerations reasearch and mathematical systems 

 - New York  Springer-Verlag Berlin Heidelberg  1970 
 - vi,466p. 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>Operation reasearch
<br/><br/><label>Dewey Class. No.: </label>519.7  / L39