"1673-08-17Z"^^ . . "Graaf, Regnier De"@en . . . "1641-07-30Z"^^ . "Regnier de Graaf"@en . . "1673Z"^^ . . . "1641Z"^^ . . . "Dutch physician" . . "Regnier de Graaf (English spelling), original Dutch spelling Reinier de Graaf, or Latinized Reijnerus de Graeff (30 July 1641 \u2013 17 August 1673) was a Dutch physician and anatomist who made key discoveries in reproductive biology. His first name is often spelled Reinier or Reynier."@en .