Katzan, Harry <br/><br/>
Operating systems  a pragmatic approach 

 - New York  Van Nostrand Reinhold Company  1973 
 - ix,387cm.  22cm. 
<br/><br/><label>ISBN: </label>0442242530 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>Computers - operation
<br/><br/><label>Dewey Class. No.: </label>621.381954  / K13O