Marcham, P <br/><br/>
Data transmission via PABXs  [Books]. 
P. Marcham. 
 - Manchester, England  NCC Publication.  1984 
 - Pages: 66. 
<br/><br/><label>ISBN: </label>0850124549  0.00 
<br/><br/><label>Subjects--Personal Names: </label><br/>Data transmission systems.<br/>Telephone -- private branch exchange.<br/>Telephone, Automatic.
<br/><br/><label>Dewey Class. No.: </label>TK/5105  / MAR