. . . . "1793-01-26Z"^^ . . . . "optician" . . "1867-01-12Z"^^ . . . "1867Z"^^ . "Merz, Georg"@en . "1793Z"^^ . . "Georg Merz (26 January 1793 \u2013 12 January 1867) was a Bavarian optician and manufacturer of astronomical telescopes and other optical instruments."@en . . "Georg Merz"@en .