Mathematics of the business world 2026-02-16T00:38:38+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Cleaves, Cheryl S; Hobbs, Margie J; Van Dyke, Janice H (Addison-Wesley Pub. Co., 1979)