000 00326nam a2200145Ia 4500
008 221231s9999 xx 000 0 und d
100 _aPrakash S M.
_95909
245 0 _aEnvironmental studies
250 _a2nd Ed
260 _bElite publishers
260 _c2009
300 _a329
650 _acivil
_95910
942 _cBE_BK
999 _c4260
_d4260