共 50 条
- [36] Quality assurance of text and image databases at the U.S. Patent and Trademark Office Information Services and Use, 1988, 8 (2-4): : 161 - 165
- [37] A comparative study between patent resources on the Internet and online patent databases. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 1998, 215 : U388 - U388