Lipschutz, Seymour. <br/><br/>
Theory and Problems of Discrete Mathematics 
Seymour, Lipschutz, Marc Lars Lipson 
 - 2nd ed. 
 - New Delhi :  Tata McGraw-Hill Publishing Company Limited,  c1997. 
 - ix, 528 p.;  [149] 
<br/><br/><label>ISBN: </label>007463710X 
<br/><br/><label>Dewey Class. No.: </label>511.3  / LIP/THE