Leland L. Block . <br/><br/>
System Softwear  System Softwear  Textual Documents 

 - 2004. 
 - [s.l]:  Pearson 
 - 519:  paper. 
<br/><br/><label>ISBN: </label>  
<br/><br/><label>Dewey Class. No.: </label>659.1  / JEW