Silberschatz , Abraham ; Galvin , Peter B. ; Gagne , Greg  <br/><br/>
Operating system concepts  
Peter B. Galvin, Greg Gagne Abraham Silberschatz. 
 - 9th ed. 
 - Hoboken  John Wiley & Sons   2013. 
 - xvii; 829 p. 
<br/><br/> Excellent in condition 
<br/><br/><label>ISBN: </label>1118093755 (paperback) 9781118093757 (paperback) 
<br/><br/><label>Source: </label> 11766.00 PKR