"1868Z"^^ . . . . . . "Russian economist and statistician" . . "Ladislaus Josephovich Bortkiewicz (August 7, 1868 \u2013 July 15, 1931) was Russian economist and statistician of Polish ancestry, who lived most of his professional life in Germany, where he taught at Strassburg University (Privatdozent, 1895\u20131897) and Berlin University (1901\u20131931)."@en . . . . "1868-08-07Z"^^ . . "Ladislaus Bortkiewicz"@en . . . . . . . . "1931Z"^^ . . "Bortkiewicz, Ladislaus"@en . . "1931-07-15Z"^^ .