The IPC: Class CD-ROM — A new search system in the patent information field : Hansson B. World Patent Information 14 (4), pp. 227–230

• Publisher: Elsevier Science
• Year: 1992
• Tongue: English
• Weight: 142 KB
• Volume: 14
• Category: Article
• ISSN: 0172-2190
• DOI: 10.1016/0172-2190(92)90016-c