語系
Watkins, Wayne H.
概要
| 作品: | 1 作品在 1 項出版品 1 種語言 | |
|---|---|---|
書目資訊
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.
(書目-語言資料,印刷品)