000 00257nam a2200121Ia 4500
654 _aCIVI
100 _aCollett.
245 _aSlow And Rapid Filtaration Of Water No. XVI.
260 _bGOVT
_c1949
082 _bCOL
300 _a245p.
999 _c4595
_d4595
041 _aeng
655 _aC-10
546 _aText in English
300 _c23 cm.