Learning to program in structured COBOL : parts 1 and 2 2026-02-16T06:49:16+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Yourdon, Edward (Prentice-Hall software series, 1979)