Discrete mathematical structures 2026-02-15T11:39:35+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Kolman, Bernard; Busby, Robert C.; Ross, Sharon Cutler (Pearson/Prentice Hall, 2009)