00534    a2200181   4500020001500000082001600015100002000031245006100051260005700112300001800169650003400187650003100221650001000252650002400262700001800286700002100304700002700325  a9552600324  a546.22bWAT  aSilva, E. I. L.  aWater analysisbuser- friendly field / laboratory manual  aKandybInstitute of Foundamental Studiesc1996g1996  av,193p.c26cm  aChemistry and allied sciences  aHydrogen and its Compounds  aWater  aInorganic chemistry  aManuweera, L.  aNamaratne, S. Y.  aWeerasooriya, S. V. R.