000 00298nam a2200121Ia 4500
008 180721s9999 xx 000 0 und d
100 _a"Narayana, M. & Thanikachalam, V."
245 0 _aEnvironmental Engineering
260 _bTata McGraw Hill
260 _c1993
365 _b60.00
942 _cBK
999 _c137189
_d137189