Yadav R.P., <br/><br/>
Research methodsin social science 
by R.P. Yadav 
 - New Delhi  OMEGA  Pubblications  2013 
 - 279P. 
<br/><br/><label>ISBN: </label>978-81-8455-020-7 
<br/><br/><label>Dewey Class. No.: </label>SZ:F  / Q3