Critchley, T. A. <br/><br/>
Open systems, the reality / 
T. A. Critchley and K. C. Batty. 
 - New York :  Prentice Hall,  1993. 
 - 390 p. :  ill. ;  24 cm. 
 - BCS practitioner series .
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0130307351  RM62.40 
<br/><br/><label>LCCN: </label>93-007961 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Operating systems (Computers)<br/>OSI (Computer network standard)