000 00354nam a2200133Ia 4500
008 210219s9999||||xx |||||||||||||| ||und||
082 _a628.3
_bG427O
100 _aGhose, D.N.
_9879
245 0 _aOperation & maintenance of sewage treatment plant.
_c D.N.Ghose
260 _aDelhi.
_bCBS.
_c1991
300 _ax; 96p
942 _cBK
950 _o628.3 G427O
999 _c32933
_d32933