Ανακοίνωσις Announcement by the Association of Working Students (SEFS) concerning the meeting of its general assembly - Τσάλτας Αντώνιος; Tsaltas Antonios; Νικόλαος Κούλης; Nikolaos Koylis; Σ.Ε.Φ.Σ. (Σύλλογος Εργαζομένων Φοιτητών Σπουδαστών); Association of Working students (SEFS)