Ανακοίνωσις Announcement by the Association of Working Students (SEFS) concerning employment opportunities for its members - Αθανασιάδης Αθανάσιος; Athanasiadis Athanasios; Ψημμένος Γιάννης; Psimmenos Giannis; Σ.Ε.Φ.Σ. (Σύλλογος Εργαζομένων Φοιτητών Σπουδαστών); Association of Working students (SEFS)