Title: Il Segno dei tre
Subjects: Characters, Sherlock Holmes, Auguste Dupin, Detective and mystery stories, History and criticism, Criminal investigation in literature, Logic in literature, Semiotics
People: Arthur Conan Doyle Sir (1859-1930), Edgar Allan Poe (1809-1849), Charles S. Peirce (1839-1914), Arthur Conan Doyle (1859-1930)