Behavior principles 2026-02-17T05:55:59+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Ferster, Charles B., 1922-; Culbertson, Stuart, 1943- (Prentice-Hall, 1982)