00334nam a2200109Ia 4500008004100000100001700041245008900058260003200147300001100179650002000190650001400210220216s9999 xx 000 0 und d aRamamorthi S 0aDecomposition of export earnings instability : A study of Sri Lankan rubber industry bRubber Board Bulletinc1984 a11-Sep aRubber industry aSri Lanka