Principles of external auditing 2026-02-16T01:39:09+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Porter, Brenda; Hatherly, David J.; Simon, Jon (John Wiley, 2008)