Real analysis 2026-02-16T12:40:26+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Royden, H. L., 1928-1993; Fitzpatrick, Patrick, 1946- (Pearson modern classic, 2018)