Information systems essentials 2026-02-15T19:04:50+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Stair, Ralph M.; Reynolds, George Walter, 1944- (Course Technology, Cengage Learning, 2010)