Understanding and evaluating educational research 2026-02-15T09:54:38+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Dyer, Jean Royer, 1941- (Addison-Wesley series in education, 1979)