000 00279nam a2200121Ia 4500
654 _aCIVI
100 _aPeterson Engineering Company.
245 _aPurification Of Water Supplies Filteration.
260 _bSELF
_c1949
082 _bPET
300 _a248p.
999 _c29633
_d29633
300 _c23 cm.
655 _aC-12
041 _aeng
546 _aText in English