Γιατι ο Φεβρουαριος εχει 28 ημερες
Subtitle: archaia kai synchrona systēmata gia tē metrēsē tou chronou
By: Panos Valavanēs
Series: Ovolos -- 11
Publisher: Ekdosē tōn Philōn tou Nomismatikou Mouseiou
Published: 2015
Place of publication: Athēna
Language: gre
Number of pages: 15
Subjects: Time; Systems and standards; History; Leap year; February
Other titles: Giati ho Phevrouarios echei 28 hēmeres
Notes: Includes bibliographical references.