Sherman Ken Ed. <br/><br/>
Data communications    A users guide      

 - 2 
 -  1985 
<br/><br/><label>Standard No.: </label>9052 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>D6,8(B),4, M5