✦ LIBER ✦
A simple electric heater and thermo-regulator for paraffin ovens, incubators, etc.
✍ Scribed by Jackson, C. M.
- Publisher
- John Wiley and Sons
- Year
- 1910
- Tongue
- English
- Weight
- 215 KB
- Volume
- 4
- Category
- Article
- ISSN
- 0003-276X
No coin nor oath required. For personal study only.