Principles of marketing 2026-02-15T16:28:57+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Kotler, Philip; Armstrong, Gary; Parment, Anders, 1972- (Prentice Hall, 2011)