"Minerale"@de . "Mineral"@en . "فلز"@ar . "کانی"@fa . . . . "Graphit"@de . . _:b1 . _:b1 "Lena Vitt" . _:b1 "2016-09-21T16:21:01+02:00" . "Graphit und Graphiterde"@de . .