Thomas, Tom <br/><br/>
Network security first -step / 
by Tom Thomas and Donald Stoddard 
 - 1st ed. 
 - India:  Dorling Kindersley (India) Pvt. Ltd,  2012. 
 - xxiv, 423p. 
<br/><br/><label>ISBN: </label>9788131787014 
<br/><br/><label>Dewey Class. No.: </label>BV  / Q2