000 00293nam a22001217a 4500
020 _a9789380191874
082 _a333.72
_bCHA/E
100 _aChawla, P S
245 _aEnvironmental conservation and sustainable development
260 _aDaryanganj
_bPearl
_c2011
300 _a248
942 _cBK
999 _c32366
_d32366