000 00273nam a2200121Ia 4500
654 _aCIVI
100 _aRangaswamy, V. & iyengar.
245 _aMechanical Filters for Town Water Supply.
260 _bGOVT
_c1912
082 _bRAN
300 _a299p.
999 _c34438
_d34438
300 _c23 cm.
655 _aC-12
546 _aText in English