000 00306nam a22001097a 4500
008 200103b ||||| |||| 00| 0 eng d
082 _a363.7 AGA.T
100 _aAGARWAL (Divya) and AGARWAL (Manoj K.)
245 _aTextbook of environmental sciences
260 _aASTRAL:
_bNewDelhi,
_c2015.
942 _2ddc
999 _c324259
_d324259