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''Helios'', more fully the ''Helios New Encyclopedic Dictionary'' ( el, Νεώτερο Εγκυκλοπαιδικό Λεξικό Ηλίου or: Νεώτερον Εγκυκλοπαιδικόν Λεξικόν Ήλιος), is a general knowledge Greek encyclopaedia. Its publication commenced in 1945 while its second edition was completed in 1960, comprising 18 volumes.
''Helios'', more fully the ''Helios New Encyclopedic Dictionary'' ( el, Νεώτερο Εγκυκλοπαιδικό Λεξικό Ηλίου or: Νεώτερον Εγκυκλοπαιδικόν Λεξικόν Ήλιος), is a general knowledge Greek encyclopaedia. Its publication commenced in 1945 while its second edition was completed in 1960, comprising 18 volumes.
See also
* List of Greek encyclopedias Greek encyclopedias 20th-century encyclopedias 1945 non-fiction books 1960 non-fiction books {{encyclopedia-stub