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041 _aeng
082 _a001.42
_bBHA
100 _aBhattacharyya, D. K.
245 _aResearch Methodology
260 _aNew Delhi
_bBharti Publications
300 _aV.P.
365 _b2.5
500 _aResearch Methodology
650 _aResearch Methodology
999 _c2786
_d2786