International Patent Classification (IPC UNION) committee of experts, seventh session (Geneva, December 10 to 13, 1979)

• Book ID: 103621500
• Publisher: Elsevier Science
• Year: 1980
• Tongue: English
• Weight: 183 KB
• Volume: 2
• Category: Article
• ISSN: 0172-2190
• DOI: 10.1016/0172-2190(80)90088-5