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020 _a81-7473-302-7
050 _aG2857.M3
_b.S56 2005
100 1 _a"sinha, shradha . "
245 1 0 _aa textbook of environmental studies:
_b/
_c shradha.. sinha
250 _a1 ed.
260 _aindia :
_baitbs
_c2005.
300 _a", 327p.;
_c22 cm."
650 0 _aenvironmental studies
942 _2lcc
_cBK
_hG2857.M3.S56 2005
999 _c39732
_d39732