00360    a2200121   4500082002000000100001800020245003400038260007300072300001600145440003700161650001900198650002100217  a553.095493bHER  aHerath, J. W.  aEconomic geology of Sri Lanka  aColombobNatural  Resources Energy and Science Authority of SriLanka  a207p.c27cm  aNatural resources series - No. 1  aEARTH SCIENCES  aECONOMIC GEOLOGY