000 00275nam a2200109 4500
082 _a630.715 RAY-R
100 _aRay G.L.
245 _aResearch Methods in social science and extension education
260 _aLudhiana
_bKalyani
_c2016
300 _a330
942 _2ddc
_cBK
999 _c128102
_d128102