000 00281nam a2200121Ia 4500
654 _aCIVI
100 _aRyan, W.J.
250 _a1st Ed.
245 _aWater Treatment Purification
260 _bPrentice Hall of India Private Limited
_c1957
082 _bRYA
999 _c31429
_d31429
041 _aeng
655 _aC-20
546 _aText in English
300 _c23 cm.