Quarterman, John S. <br/><br/>
Matrix: computer networks and conferencing systems world wide /John S Quarterman 

 - Burlington  Digital Press  1990 
 - xvii, 719p. 
<br/><br/><label>ISBN: </label>1555580335 
<br/><br/><label>Dewey Class. No.: </label>004.6  / N902;2