000 00314 a2200133 4500
000 nam a22 7a 4500
100 _aBatra, Sanjay Kumar
110 _aBatra, Sanjay Kumar
245 _aEnvironmental science theory into practice
250 _a7th ed.
260 _bTaxmann
264 _bTaxmann
942 _cBK
999 _c21579
_d21579