Hebditch, David L. <br/><br/>
Data Communicatons: An Introductory Guide 

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 - London  Elek Science  1975 
 - 223 p.   
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<br/><br/><label>ISBN: </label>
<br/><br/><label>ISSN: </label>
<br/><br/><label>Subjects--Index Terms: </label>An Introductory Guide 
<br/><br/><label>Dewey Class. No.: </label>621.391