00742nam a2200181 a 4500003000200000005001700002008004100019050003400060100001700094245011900111260009100230300004500321504004100366650003700407650004600444650003800490650003200528020250321153129.0060801s19uu    xx            00    eng d  aPGS TP 159.F5.C66b.L477 2006  aLee, Eu Jin.  aA comparative study on the filtration using activated carbon and mineral sand and manual filtration /cEu Jin Lee.  aLas Piñas City, Philippines  :bSouthville International School and Colleges,c2006.  a30 pages : billustrations ; c28 cm.     aIncludes bibliographical references.  aWatervPurificationvFiltration.  aActivated carbonvFiltration properties.   aMineral sandvWater purification.  aManual filtration methods.