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Vergleich der quecksilberemission Dutch text.svg Picture from German Now with Dutch text Rasbak bersetzung des PublicDomain Diagramms CFL bulb mercury use environment svg Quelle der Grafik nema org pdf Fr das Quellbild gilt PDUSGov Uploaded Feb by user Balder Diskussion Beitrge Bytes bersetzung des PublicDomain Diagramms