| Subject: | T, Inventions |
| Format: | Electronic text |
| Date issued: | 2009 |
| Language: | English |
| Publisher: | Project Gutenberg, |
| Rights: | Public domain in the USA. |
| Download link: | Little Masterpieces of Science : Invention and Discovery [electronic resource] |
| Subject: | T, Inventions |
| Format: | Electronic text |
| Date issued: | 2009 |
| Language: | English |
| Publisher: | Project Gutenberg, |
| Rights: | Public domain in the USA. |
| Download link: | Little Masterpieces of Science : Invention and Discovery [electronic resource] |