. "1820-06-15Z"^^ . . "1878Z"^^ . . . . . "Lamy, Claude Auguste"@en . "19th-century French chemist" . "1878-03-20Z"^^ . . "Claude Auguste Lamy"@en . "Claude Auguste Lamy (15 June 1820 \u2013 20 March 1878) was a French chemist who discovered the element thallium independently from William Crookes in 1862."@en . "1820Z"^^ . .