000 00331nam a2200133Ia 4500
008 220201s2020 xx 000 0 eng d
082 _a304.2071 SOM
100 _aSomavanshi, S
245 0 _aFundamentals of environmental studies
250 _a2nd
260 _aNew Delhi
_bSK Kataria
_c2019
300 _a293p.
942 _2ddc
999 _c30190
_d30190