Chartrand G. <br/><br/>
Graphs and Digraphs   
by G Chartrand and L Lesniak 
 - Boca Raton  Chapman and Hall/CRC  2005 
 - viii, 386p 
<br/><br/><label>ISBN: </label>1584883901 
<br/><br/><label>Dewey Class. No.: </label>511.5  / P051