Precalculus 2026-02-15T18:06:12+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Barnett, Raymond A.; Byleen, Karl; Ziegler, Michael R. (McGraw-Hill Higher Education ; McGraw-Hill [distributor], 2008)