Trochim,William M K <br/><br/>
Research methods 

 - 2 
 - New Delhi  Biztantra  2003 
 - ix,363p. 
<br/><br/><label>ISBN: </label>8177223720 
<br/><br/><label>Subjects--Index Terms: </label>research methods 
<br/><br/><label>Dewey Class. No.: </label>001.8  / TRO