000 00313nam a2200121 4500
999 _c10985
_d10985
003 OSt
005 20221105105243.0
008 221105b ||||| |||| 00| 0 eng d
100 _aAlma Singh sharma
245 _aEnvironmental science and engineering
260 _aDelhi
_bInternational book traders
942 _2ddc