00430    a2200145   4500020001500000082001500015100002300030245004300053260007300096300001600169650001900185650001700204650003600221700002700257  a9555900019  a551.9bDIS  aDissanayake, C. B.  aThe hydrogeochemical atlas of SriLanka  aColombobNatural  Resources Energy and Science Authority of SriLanka  a106p.c28cm  aEarth sciences  aGeochemistry  aGeology, hydrology, meteorology  aWeerasooriya, S. V. R.