Die patent documentation group : Ochsenbein, P. World Patent Information 9 (2), 92–95

• Publisher: Elsevier Science
• Year: 1987
• Tongue: English
• Weight: 148 KB
• Volume: 9
• Category: Article
• ISSN: 0172-2190
• DOI: 10.1016/0172-2190(87)90165-7