Gralla  <br/><br/>
How the Internet works  
/ Preston Gralla; illustrated by Michael Troller. 
 - 2nd ed.. 
 - Indianapolis  Pearson Education [distributor]  2007. 
 - xiii, 416p.  col., ill.  26cm 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>0789736268  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Internet--Popular works
<br/><br/><label>Dewey Class. No.: </label>004.678 GRA 2007