Foundations of discrete mathematics  
Joshi, K. D. 
 - New York : | New Delhi, India :  Wiley ; | Wiley Eastern Ltd.,  1989 
 - xvi, 748 p. :  ill. ;  25 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0470211520 | 8122401201