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They used a lead sulfide flux from the smelting of ores, combined with the use of a wind-drafted clay kiln, which introduced guide in the environment as well as sediment of rivers.[eighty four]প্রতিবেশী দেশে সরকার বদল, ভারতের 'নেইবারহুড ফার্স্ট’ নীতিত�