Basic Principles of Passive Solar Design
This is a 37 page document that introduces the principles of passive solar design. With line illustrations.
Free PDF
Book Tag: methane
Is Methane Production Practical?
A Backwoods Home Anthology ALTERNATIVE ENERGY Is methane production on your homestead practical? By Jim Tracy for a Homesteaders searching power source…
Free PDF
The How to Build a Hydrogen Generator Book
Your buying a guide showing you HOW TO BUILD A HYDROGEN GENERATOR & RUN YOUR VEHICLE ON WATER set in an Easy…
Free PDF