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008 250902s2017||||xx |||||||||||||| ||eng||
020 _a9788178127224
082 _a500 SIN
100 _aSingh B B
245 0 _aCBSE UGC NET Environmental Sciences
260 _bRamesh Publishing House
_aNew Delhi
_c2017
300 _a640
650 _aenvironmental sciences
942 _cCB
999 _c114983
_d114983