Liu, CL. <br/><br/>
Elements of discrete mathematics 

 - 2nd ed. 
 - New York  McGraw-Hill  1985 
 - xiv, 433 p.  22 cm.  HB 
 - McGraw-Hill computer sience series .
<br/><br/><label>Subjects--Uniform Titles: </label><br/>Combinatorial analysis<br/>Algebra, abstract
<br/><br/><label>Dewey Class. No.: </label>511  / LIU