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1Publicado 1978Colombo : Dept. of Census and Statistics, Ministry of Plan Implementation, [1978][19] p. ; 30 x 45 cm.Subjects: “...Prices Sri Lanka Statistics....”
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2Publicado 1980[Colombo] : Dept. of Census and Statistics, Ministry of Plan Implementation, [1980]17 p. ; 23 x 30 cm.Subjects: “...Prices Sri Lanka Statistics....”