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Original Cover:
Cover of Revised Edition:

Source: Permanent Publications

Publisher: Rocky Mountain Research Center

Summary

This book shows you how to: Inexpensively store warm summer sunshine for heating all winter.

Where to get it?

1st Edition (1983):
Amazon.com
Amazon.ca
Amazon.co.uk

Revised Edition (2013):

Amazon.com
Amazon.ca
Amazon.co.uk

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Paul on The Survival Podcast talking about wofatis
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Passive Annual Heat Storage Thread
the first wofati: allerton abbey
the second wofati: wofati 0.8
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Related Websites

Umbrella Homes by John Hait
Paul Wheaton's Wofati Article
 
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