MARC状态:已编 文献类型:西文图书 浏览次数:50
- 题名/责任者:
- Official catchword index to the fourth edition (1984) of the International patent classification / World Intellectual Property Organization.
- 出版发行项:
- Mu?nchen : C. Heymann, c1984.
- ISBN:
- 3452200299 (pbk.)
- 载体形态项:
- 335 p. ; 24 cm.
- 论题主题:
- Patents-Classification-Indexes.
- 中图法分类号:
- G255.53
- 随书光盘:
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