The universe of design : Horst Rittels theories of design and planning 2026-02-15T23:26:40+03:00 DEBUG: VuFind\ILS\Driver\Folio: Token taken from global cache: eyJhbGciOiJIUzI1NiJ9.eyJzdWIiO... - Protzen, JeanPierre; Harris, Donald J (Routledge, 2010)