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Continue to ChatBulgaria: Calling for National Protest Against Shale Gas Extraction https://globalvoices.org/2012/05/21/bulgaria-calling-for-national-protest-against-shale-gas-extraction/
Bulgaria: Calling for National Protest Against Shale Gas Extraction https://globalvoices.org/2012/05/21/bulgaria-calling-for-national-protest-against-shale-gas-extraction/