Plethron December 6, 2016 by ip-exhibitions.eu Plethron Addresss: Massalias 20, Athina 106 80, Greece Website: http://www.plethronbooks.gr/ Telephone: 210 364 5057 Fax: 210 364 1260 Plethron offers a variety of foreign language teaching books and educational material. Visit the website of Plethron View other bookstores offering foreign language teaching (FLT) material in Greece and Cyprus.