Kothari, C R <br/><br/>
Research methodology  methods and techniques 

 - 2nd ed. 
 - New Delhi  Wiley eastern limited  1990 
 - xii, 468 p.; 22cm. 
<br/><br/><label>ISBN: </label>852264771 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Research<br/>Research methodology<br/>Research techniques<br/>Scientific research