Wikipedia
Treccani
The Enciclopedia Italiana di Scienze, Lettere ed Arti ( Italian for "Italian Encyclopaedia of Science, Letters, and Arts"), best known as Treccani for its developer Giovanni Treccani or Enciclopedia Italiana, is an Italian-language encyclopaedia. The publication Encyclopaedias: Their History Throughout The Ages regards it as one of the greatest encyclopaedias, along with the Encyclopædia Britannica Eleventh Edition and the Enciclopedia universal ilustrada europeo-americana.