Gralla, Preston <br/><br/>
How the internet works 
Preston Galla 
 - Emeryville California  Macmillian Publishing USA 
 - xi, 180p. :  colored illustrations ;  25 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>1562764047 
<br/><br/><label>Dewey Class. No.: </label>CIR 004.67 G774 1996