World patent information : Vögtel M. The use of external databases as a supplementary tool to traditional searches of a patent examiner 7 (1/2), 126–132

• Publisher: Elsevier Science
• Year: 1985
• Tongue: English
• Weight: 108 KB
• Volume: 7
• Category: Article
• ISSN: 0172-2190
• DOI: 10.1016/0172-2190(85)90092-4