دفتر notebook

Etymology of Arabic words = the word دفتر (daftar) which means notebook 

( Wikipedia: διφθέρα= book having pages of goat parchment, used along with papyrus as paper in Ancient Greece borrowed into Persian دفتر: daftar meaning book,registry, and in modern time office or bureau.,)

 has as origin the ancient Greek word διφθέρα (difthera)  and/or the later version διφθέριον(diftherion). Similar word is used in turkish (defter) .