000 00384nam a2200169Ia 4500
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040 _aMAIN
041 _aEnglish
082 _a574.5
_bSHA N0
100 _aSharma, P.D.
245 0 _aEcology and environment
_cP.D. Sharma
250 _a6th
260 _aMeerut
_bRastogi
_c1990
300 _a519
650 _aEcology
942 _cBK
999 _c5055
_d5055