Home » Time Travel: Circling the Square: P.H. Smith and His Chart Technical Articles Time Travel: Circling the Square: P.H. Smith and His Chart November 13, 2024 Stefano Selleri, University of Florence 0 Comments Time Travel: Circling the Square: P.H. Smith and His Chart Download Time Travel (PDF) Jump to Page: You must login or register in order to post a comment. Report Abusive Comment Thank you for helping us to improve our forums. Is this comment offensive? Please tell us why.