Burger, Ralf  <br/><br/>Computer Viruses and Data Protection:  -- Germany;  International Business Machines, Inc,  1991. <br/><br/> Indexies <br/><br/><label>ISSN: </label>9789718613788 <br/><br/><label>Dewey Class. No.: </label>Cir 005.8 B911 1991