Iyengar N. Ch. S. N. <br/><br/>
Discrete mathematics 
/ by N. Ch. S. N. Iyengar 
 - Delhi:  Vikas publishing house   2003 
 - xiv,376p. 
<br/><br/><label>ISBN: </label>8125913629 
<br/><br/><label>Dewey Class. No.: </label>511.1  / IYE/D