"1830Z"^^ . "1888Z"^^ . . "Rath, Gerhard vom"@en . "1888-04-23Z"^^ . "Gerhard vom Rath (August 20, 1830 - April 23, 1888), was a German mineralogist, born at Duisburg in Prussia."@en . . "1830-08-20Z"^^ . "German mineralogist" .