L D Clerk common Top Ranker / 
edited by V. R. Priya and Anupama J. 
 - 4th ed. 
 - Kottayam :  Irank,dc Books,  2014. 
 - PSC self study series .
<br/><br/><label>ISBN: </label>9788126452910 
<br/><br/><label>Subjects--Index Terms: </label>Generalia Knowlege