Schaum's outline of theory and problems of mathematical methods for business and economics 2026-02-16T01:34:41+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Dowling, Edward Thomas (Schaum's outline series, 1993)