| Author: | Conant, Levi L. (Levi Leonard), 1857-1916 |
| Subject: | QA, Number concept |
| Format: | Text |
| Date issued: | 2005 |
| Language: | English |
| Publisher: | Project Gutenberg, |
| Rights: | Public domain in the USA. |
| Download link: | The Number Concept : Its Origin and Development [electronic resource] / Levi L. Conant |