The denotational description of programming languages : an introduction 2026-02-15T22:54:40+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Gordon, Michael J. C., 1948 (Springer-Verlag, 1979)