. . "Centrum naturæ concentratum, or, The salt of nature regenerated for the most part improperly called the philosopher's stone"@en . . "Centrum naturæ concentratum, or, The salt of nature regenerated for the most part improperly called the philosopher's stone" . . . . . "Centrum naturae concentratum"@en . . "Centrum naturae concentratum : or the salt of nature regenerated" . "Centrum naturae concentratum, or, The salt of nature regenerated for the most part improperly called the philosopher's stone"@en . "Early works"@en . "Salt of nature regenerated"@en . . . . . . . "Centrum naturae concentratum, or, The salt of nature regenerated : for the most part improperly called the philosopher's stone"@en . "Centrum naturæ concentratum : or, the salt of nature regenerated. For the most part improperly called the Philosopher's Stone"@en . . "Centrum natur concentratum, or, The salt of nature regenerated for the most part improperly called the philosopher's stone"@en . . . . . . . . . "Centrum naturæ concentratum: or the salt of nature regenerated. : For the most part improperly called the philosopher's stone"@en .