PRERECORDED OPTICAL DATA CARRIERS AND MAGNETIC DATA CARRIERS FEATURING PRODUCT CATALOGUES; PRERECORDED OPTICAL DATA CARRIERS AND MAGNETIC DATA CARRIERS FEATURING COMPUTER SOFTWARE, NAMELY, COMPUTER SOFTWARE FOR APPLICATION AND DATABASE INTEGRATION, DATABASE MANAGEMENT, FOR USE AS A SPREADSHEET, FOR SELECTION OF SUITABLE GOODS OF STEEL FOR USE IN CIVIL ENGINEERING, IN STEEL CONSTRUCTION, IN INSTALLATION CONSTRUCTION, IN POWER PLANTS ENGINEERING AND IN PROCESS ENGINEERING AND FOR GENERATING DRA...