Ray G.L. <br/><br/>
Research Methods In Social Sciences And Extension Education / G. L. Ray. 

 -  Ludhiana: Kalyani Pub. 2011 
 - 330 P. ILL. 24 CM 
 -  0 .
<br/><br/><br/>ENG 
<br/><br/><label>ISBN: </label>9788127267469 (Pbk)