https://permies.com/w/oehler
Mike Oehler 1938-2016 (permaculture artisans forum at permies)
Mike Oehler is an author who writes extensively about natural building and most specifically underground housing. Here is Mike Oehler's Permaculture Playing...
mike oehlerpermaculture artisansforumpermies
https://permies.com/wiki/23444/Earth-Sheltered-Solar-Greenhouse-Book
The Earth Sheltered Solar Greenhouse Book by Mike Oehler (digital-market forum at permies)
The greenhouses described in this book overcome this problem; and the book explains how to build an earth sheltered greenhouse, using Mike Oehler's PSP...
the earthbook by