00470nam a2200169Ia 4500008004100000020001500041082001700056100001500073245006300088260003900151300000800190650002000198653002400218653002100242653001900263700001800282170901s1999    xx            000 0 und d  a8127214639  a300.18bR22R  aRay, G. L. 0aResearch Methods in Social Science And Extension Education  aLudhianabKalyani Publishersc1999  a321  aSocial sciences  aExtension Education  aResearch methods  aSocial Science  aMondal, Sagar