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020 _a9788184872460
040 _aMAIN
041 _aEnglish
082 _a001.42 CHA
100 _aChandra, Suresh
_911127
245 0 _aResearch methodology
260 _bNarosa
_aNew Delhi
_c2013
300 _a254
650 _aEnvironmental science
700 _aSharma, Mohit K./
_911128
942 _cBK
999 _c46482
_d46482