Flynn, Ida M. (Ida M. Flynn) <br/><br/>
Operating Systems. 

 - New Delhi :  Cengage Learning,  2006. 
 - 421 p. ;  (R 11 SH 3) 
<br/><br/> This fourth edition blends operating systems theory and practice in a well-organized way. Its innovative two-part approach explores operating systems theory and development in the first section, and discusses the four most widely-used operating systems (MS-DOS, Windows, Linux, and UNIX) in the second. Each chapter has been updated for currency, and a brand-new chapter on System Security has been added. 
<br/><br/><label>ISBN: </label>0534423663 (hardcover) 9780534423667 (hardcover) 
<br/><br/><label>Source: </label> Pak Book  PKR 655.11 
<br/><br/><label>Dewey Class. No.: </label>005.43