000 00292nam a2200121Ia 4500
008 220201s2017 xx 000 0 eng d
100 _aKHOIYANG BAM
245 0 _aINTRODUCTION TO ENVIRONMENTAL SCIENCES
260 _aDELHI
_bTERI PUB
_c2017
300 _a427
700 _aGUPTA
942 _2ddc
999 _c93944
_d93944