Algebra : a study aid for self-education 2026-02-16T01:49:27+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Nikolsky. S. M; Potapov, M. K. (Mir Publishers, 1987)