Liu, C.L. <br/><br/>
Elements of discrete mathematics 

 - New Delhi  Tata McGraw-Hill Pub. Com. Ltd.  1985 
 - xiv,433p.  22cm. 
<br/><br/><label>ISBN: </label>007043476X 
<br/><br/><label>Dewey Class. No.: </label>511.6  / L67E