Bhattrai, Chhatra. <br/><br/>
Operator guru. 

 -  Ratna sagar publication,  2010. 
 - 679 p. 
<br/><br/><label>ISBN: </label> 500 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer science.<br/>Database systems.<br/>Operating systems.
<br/><br/><label>Dewey Class. No.: </label>004  / BHA-o