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020 _a81-88342-55-6
035 _a42590
082 _a574.5
_BSIN / SIN / GUP
100 _aSingh, J. S. / Singh, S. P. / Gupta, S. R.
245 0 _aEcology Environment And Resource Conservation
250 _a-
260 _aN. Delhi
_bAnamaya Publishers
300 _a688
500 _a117
650 _aEcology
942 _cBK
999 _c44749
_d44749