000 00287nam a2200121Ia 4500
008 220201s1992 xx 000 0 eng d
082 _a658.57
_bSAD
100 _aSadhu singh
245 0 _aReference esearch Methodology in social sence .
260 _c1992
300 _a287
942 _2ddc
999 _c7523
_d7523