Bates J., Bates M. <br/><br/>
Principles of voice and data communications  0 
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 - 0  McGraw-Hill  2007 
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<br/><br/><label>ISBN: </label> 3500 
<br/><br/><label>Subjects--Index Terms: </label>0 
<br/><br/><label>Dewey Class. No.: </label>621.382 B-30  / 0