01
Alternative Energy Sources: Ultimate How-To Guide on Building Your Own Affordable Power System : (Geothermal Heat Pump, Lower Bills and off Grid Living)
The earliest high-confidence catalog date in this author overview is 2016.
Author
Robert Pena
3 cataloged contributions
2016 across 2 high-confidence dated works
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A considered starting point for reading Robert Pena, drawn from catalog context and salon activity when available.
02
Substitute Energy Sources: Learn How to Use Alternative Energy Sources to Get Energy Independence : (Energy Efficient Homes)
A clearly attributed work with a supported 2016 catalog date.
The catalog
Bibliography
2 works
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1 cataloged edition
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1 cataloged edition
- shelves
- 0
- reviews
- 0
- lists
- 0
- quotes
- 0