000 00274nam a2200121Ia 4500
008 161121s9999 xx 000 0 und d
100 _aBasak (N.N.)
245 0 _aEnvironmental Engineering
260 _cTata Mcgraw hill
365 _b0
650 _aNIL
942 _cBK
_01
999 _c106821
_d106821