Kothari, C R <br/><br/>
Research methodology :  methods and techniques/ 
by C R Kothari. 
 - 4th ed. 
 - new delhi:  new age international,  c2019. 
 - xxi, 458p. :  ill. ;  23 cm. 
<br/><br/>Includes index. 
<br/><br/><label>ISBN: </label>9789386649225 9788122436235 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Research--Methodology.<br/>Social sciences--Research<br/>Research
<br/><br/><label>Dewey Class. No.: </label>300.723  / KOR