. "Ernst Engel"@en . . . "1896Z"^^ . . "Ernst Engel (March 26, 1821 \u2013 December 8, 1896) was a German statistician and economist, famous for the Engel curve and the Engel's law."@en . . . . "1821Z"^^ . "1896-12-08Z"^^ . . "German statistician and economist" . "1821-03-26Z"^^ . . "Engel, Ernst"@en .