Childress, Robert L,  <br/><br/>
Sets, matrices, and linear programming 
/ by Robert L. Childress. 
 - Englewood Cliffs, N.J.:   Prentice-Hall,   1974. 
 - xii, 356 pages:   illustrations;   24 cm. 
<br/><br/>Includes bibliographies. 
<br/><br/><label>ISBN: </label>0138067376 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Set theory.<br/>Matrices.<br/>Linear programming