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Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization (2018). Annual Report 2018(PDF) (Report). Provisional Technical Secretariat of the Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization. Archived from the original(PDF) on 7 February 2021. Retrieved 28 January 2021.
Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization (2018). Annual Report 2018(PDF) (Report). Provisional Technical Secretariat of the Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization. Archived from the original(PDF) on 7 February 2021. Retrieved 28 January 2021.