| Author: | Price, Derek J. de Solla (Derek John de Solla), 1922-1983 |
| Subject: | Q, TS, Clocks and watches, Horology |
| Format: | Electronic text |
| Date issued: | 2009 |
| Language: | English |
| Publisher: | Project Gutenberg, |
| Rights: | Public domain in the USA. |
| Download link: | On the Origin of Clockwork, Perpetual Motion Devices, and the Compass [electronic resource] / Derek J. de Solla Price |