Biggs, Norman L <br/><br/>
Discrete mathematics 

 - 2 
 -  Oxford University Press, New Delhi  2008 
 - 425 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematical logic; Mathematics
<br/><br/><label>Dewey Class. No.: </label>511.3  BIG-D2