Marketing research 2026-02-15T10:03:11+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Luck, David Johnston; Rubin, Ronald S.; Taylor, Donald A.; Wales, Hugh G. (Prentice-Hall, 1978)