"I certainly feel that the time is not far distant when a knowledge of the principles of diet will be an essential part of one's education. Then mankind will eat to live, be able to do better mental and physical work and disease will be less frequent."


The Homeowner's Handbook to Energy Efficiency: A Guide to Big and Small Improvements![]() |
| -By: John Krigger, Chris Dorsi -Price: $14.15 (New) $16.90 (Used) |
Handbook oF Energy Efficiency and Renewable Energy (Mechanical Engineering)![]() |
| -Price: $135.96 (New) $190.48 (Used) |
Energy-Efficiency Upgrades: Principles, Details, Examples (Detail Practice)![]() |
| -By: Clemens Richarz, Christina Schulz, Friedemann Zeitler -Price: $32.97 (New) $36.81 (Used) |
Energy Efficiency Manual: for everyone who uses energy, pays for utilities, designs and builds, is interested in energy conservation and the environment![]() |
| -By: Donald R. Wulfinghoff -Price: $197.50 (New) $427.90 (Used) |
Energy Efficient Homes For Dummies (For Dummies (Home & Garden))![]() |
| -By: Rik DeGunther -Price: $10.45 (New) $10.45 (Used) |
Optimizing Energy Efficiencies in Industry![]() |
| -By: G.G. Rajan -Price: $59.90 (New) $39.02 (Used) |
Oil and the Future of Energy: Climate Repair * Hydrogen * Nuclear Fuel * Renewable and Green Sources * Energy Efficiency![]() |
| -Price: $5.74 (New) $1.45 (Used) |