Calculus : multivariable 2026-02-15T18:46:20+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Anton, Howard; Bivens, Irl; Davis, Stephen, 1952- (Wiley, 2005)