Copernicus : yesterday and today : proceedings of the Commemorative Conference held in Washington in honour of Nicolaus Copernicus 2026-02-15T09:05:00+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Beer, Arthur, 1900-; Beer, Arthur, 1900-; Strand, K. Aage (Kaj Aage), 1907- (Vistas in astronomy, 1975)