Childress, Robert L. <br/><br/>
Sets, matrices, and linear programming 
[by] Robert L. Childress. 
 - Englewood Cliffs, N.J.,  Prentice-Hall  [1974] 
 - xii, 356 p.  illus.  24 cm. 
<br/><br/> Includes index. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0138067376 (hbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Set theory.<br/>Matrices.<br/>Linear programming.