000 00246nam a22001097a 4500
999 _c338696
_d338696
020 _a9788180522116
082 _a333.7
_bAHl.E
100 _aV.K. Ahluwalia
245 _aEnvironmental Science
260 _aNewDelhi
_bAne Books
_c2006
942 _cBK