语系
Watkins, Wayne H.
概要
| 作品: | 1 作品在 1 项出版品 1 种语言 | |
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书目信息
How to invent and protect your invention :a guide to patents for scientists and engineers /
by:
Ball, Elyse N.; Kennedy, Joseph Paul, (1928-); Watkins, Wayne H.
(书目-语言数据,印刷品)