Kothari, C. R. <br/><br/>
Research methodology  methods and techniques 
C. R. Kothari                                                
 - 2nd ed. 
 - New Delhi  Viswa Prakashana  1997 
 - xii, 468p. 
<br/><br/><label>ISBN: </label>81-7328-036-3 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Observations.<br/>Research methodology
<br/><br/><label>Universal Decimal Class. No.: </label>021  / KOT