Kothari, C.R <br/><br/>
Research methodology: methods and techniques / 
C.R Kothari 
 - New delhi:  New age,  2012 
 - 402 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics
<br/><br/><label>Dewey Class. No.: </label>3  / KOT/R